Test tool for collector ring contact of on-load tap-changer

Abstract

The utility model discloses an on-load tap-changer collecting ring contact testing tool, which comprises a bottom plate and a testing mechanism, a placing groove is arranged at the center of the top of the bottom plate, the testing mechanism comprises a base plate, a shaft rod is arranged at the bottom of the base plate, a sliding table is arranged at the top of the base plate in a sliding manner, a tension meter is arranged at the top of the sliding table, a pull plate is arranged at the output end of the tension meter, and a guide block is arranged on the pull plate. A mounting plate is arranged at the bottom of the tension meter, a rack is arranged on the surface of the mounting plate, a rotating rod is rotationally arranged at the end, away from the guide groove, of the top of the base plate, and a gear is arranged at one end of the rotating rod and engaged with the rack. According to the utility model, the problems that a collecting ring contact cannot be measured in a conventional mode due to the fact that a rotating part in the middle of an existing on-load tap-changer moving contact has certain obstruction, and a tool made of materials such as steel wires and the like is proved to be troublesome in use and large in error in actual use are effectively solved; therefore, the test accuracy and the test efficiency are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to test frock technical field, concretely relates to a kind of on-load tap changer collector ring contact's test frock. BACKGROUND

[0002] Tap changer is a kind of voltage regulating device for changing the tap connection position of transformer winding, and is mainly divided into two categories of on-load tap changer and no-excitation tap changer:

[0003] On-load tap changer: can operate in the state of transformer excitation or load, changes the tap of transformer winding, changes the number of turns of winding, thereby adjusts the voltage ratio of transformer, realizes the purpose of voltage regulation. Its circuit is composed of transition circuit, selection circuit and voltage regulating circuit three parts, and can be divided into switching switch, tap selector and operating mechanism three parts in structure.

[0004] No-excitation tap changer: needs to operate in the case of transformer power-off and no excitation, changes the tap position of transformer winding, adjusts the number of turns of winding, and then changes the voltage ratio of transformer, to achieve the effect of voltage regulation.

[0005] As Figure 6 As shown in the prior art, when measuring on-load tap changer moving contact, the clamping force of collector ring contact inside and outside the bottom of on-load tap changer moving contact needs to be measured to prevent the collector ring contact from being clamped with different force due to the deviation of spring sheet production and processing angle or assembly riveting, thereby causing excessive wear or eccentric wear of contact, or excessive heat / transition ablation of collector ring contact due to insufficient clamping force of collector ring contact.

[0006] The existing on-load tap changer moving contact has certain obstruction in the middle rotating part, so the conventional method cannot measure the collector ring contact, and the frock using steel wire and other flexible materials hung on the tension meter is proved to be troublesome and have large error in actual use.

[0007] Therefore, the applicant has made beneficial design, found the method to solve the above problems, and the technical scheme to be introduced below is generated in this background. CONTENT OF UTILITY MODEL

[0008] The utility model provides on-load tap changer collector ring contact's test frock to solve the problems raised in the above background technology.

[0009] To achieve the above object, the utility model provides the following technical scheme:

[0010] A kind of testing tool of load tap changer current collector ring contact, including bottom plate, test mechanism, the bottom plate top central place is equipped with placing groove, the test mechanism includes base plate, the base plate bottom is equipped with shaft, the base plate top is equipped with sliding slide, the slide top is equipped with tension meter, the tension meter output is equipped with pull plate, the pull plate is equipped with guide block, the base plate one end is equipped with guide slot, the guide block is slidably connected with the guide slot, the tension meter bottom is equipped with mounting plate, the mounting plate surface is equipped with rack, the base plate top is rotatably equipped with rotating lever at one end away from the guide slot, the rotating lever one end is equipped with gear, the gear is engaged with the rack.

[0011] Preferably, the rotating lever is equipped with hand wheel at one end away from the gear.

[0012] Preferably, the base plate top is equipped with slide rail on both sides, and the slide bottom is slidably connected with the two slide rails respectively.

[0013] Preferably, the guide rail surface is equipped with scale.

[0014] Preferably, the guide rail is arranged along the length direction of the base plate, and the rack is arranged along the same direction as the guide rail.

[0015] Beneficial effects

[0016] The above one or more technical solutions in the testing tool of load tap changer current collector ring contact provided by the embodiments of the present application have at least one of the following technical effects:

[0017] The copper plate card of the load tap changer movable contact is inserted into the placing groove during testing, the shaft at the bottom of the base plate is inserted into the sleeve hole on the copper plate, the pull plate is embedded in the inner side of the contact of the current collector ring contact, the rotating lever drives the gear to rotate by rotating the hand wheel, the rack is moved by the gear, so that the tension meter moves along the guide rail, the pull plate at the output end of the tension meter receives the tension of the contact and the spring piece, so that the tension meter displays the tension value, the clamping force of the current collector ring contact is tested by the value displayed by the tension meter, so that the purpose of testing the current collector ring contact is achieved. By rotating the direction of the test mechanism, the left and right sides of the current collector ring contact can be tested respectively. Therefore, the problem that the conventional method cannot measure the current collector ring contact due to the existence of certain obstacles in the middle rotating part of the existing load tap changer movable contact is effectively avoided, and the problem that the tool made of steel wire and other materials is proved to be troublesome and has large error in actual use is solved, so that the testing accuracy and testing efficiency are improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the bottom plate structure schematic view of the utility model;

[0019] Figure 2 It is a test mechanism structural schematic view of the utility model;

[0020] Figure 3 It is a base plate structure schematic view of the utility model;

[0021] Figure 4 It is a tensiometer structure schematic view of the utility model;

[0022] Figure 5 It is a use state structure schematic view of the utility model;

[0023] Figure 6 It is a load tap changer movable contact structure schematic view.

[0024] The corresponding relationship between the annotations of each figure in the drawing and the component names is as follows:

[0025] 1, bottom plate; 2, test mechanism; 3, placing groove; 4, base plate; 5, shaft rod; 6, sliding table; 7, tensiometer; 8, pull plate; 9, guide block; 10, guide groove; 11, mounting plate; 12, rack; 13, rotating rod; 14, gear; 15, hand wheel; 16, guide rail; 17, load tap changer movable contact; 18, copper plate; 19, sleeve hole; 20, contact seat; 21, collector ring contact; 22, spring sheet; 23, contact. DETAILED DESCRIPTION

[0026] The technical solutions of the utility model will be described clearly and completely in combination with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, rather than 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 protection scope of the utility model.

[0027] In the description of the utility model, it should be understood that the directions or position relationships indicated by the terms such as "upper", "lower", "left", "right" are the directions or position relationships shown based on the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated devices or elements must have a particular direction, be constructed and operated in a particular direction, and therefore cannot be understood as a limitation on the utility model.

[0028] In the description of the utility model, still need explaining, unless another explicit provision and limitation, term '' set '', '' install '', '' link '', '' connect '' should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be direct connection, also can be indirectly connected through the intermediate medium, can be two elements inside the intercommunication. For ordinary skilled in the art, can understand the specific meaning of the above-mentioned term in the utility model according to specific circumstances.

[0029] In order to avoid excessive unnecessary details, the following embodiments will not be described in detail.

[0030] As Figures 1-6 As shown in the structure diagram of a load tap changer collector ring contact testing tool of a preferred embodiment of the utility model shows,

[0031] In this embodiment, including the bottom plate 1, test mechanism 2, test mechanism 2 and the bottom plate 1 are split structure, the top central part of the bottom plate 1 is equipped with the placing groove 3, the placing groove 3 and the copper plate 18 of load tap changer movable contact 17 shape cooperation, the test mechanism 2 includes the base plate 4, the bottom of the base plate 4 is equipped with the shaft 5, the shaft 5 is perpendicular to the base plate 4, the top of the base plate 4 is slidably equipped with the sliding table 6, the top of the sliding table 6 is equipped with the tension meter 7, the tension meter 7 is moved by sliding the sliding table 6, the output end of the tension meter 7 is equipped with the pull plate 8, the pull plate 8 is fixed in the output end of the tension meter 7 by the nut, the pull plate 8 and the tension meter 7 are ninety degrees included angle, the pull plate 8 is equipped with the guide block 9, one end of the base plate 4 is equipped with the guide slot 10, the guide block 9 and the guide slot 10 are slidably connected, the pull plate 8 is guided by the cooperation of the guide block 9 and the guide slot 10, the bottom of the tension meter 7 is equipped with the mounting plate 11, the surface of the mounting plate 11 is equipped with the rack 12, the top of the base plate 4 is rotatably equipped with the rotating rod 13 away from the guide slot 10, the rotating rod 13 and the rack 12 are horizontally ninety degrees direction, one end of the rotating rod 13 is equipped with the gear 14, the gear 14 is engaged with the rack 12, the rotating rod 13 rotates and drives the gear 14 to rotate, the gear 14 rotates and drives the rack 12 to move, the movement of the rack 12 makes the mounting plate 11 drive the tension meter 7 on the top to move.

[0032] In this embodiment, one end of the rotating rod 13 away from the gear 14 is equipped with the hand wheel 15. The rotating rod 13 is rotated by rotating the hand wheel 15, and the rotating rod 13 rotates and drives the gear 14 to rotate.

[0033] In this embodiment, both sides of the top of the base plate 4 are equipped with guide rails 16, and the bottom of the sliding table 6 is slidably connected with the two guide rails 16 respectively. The sliding connection between the sliding table 6 and the base plate 4 is realized by the structure.

[0034] In this embodiment, the guide rail 16 is provided with a scale. By observing the scale value, the slip ring contact 21 of different models can be adapted.

[0035] In this embodiment, the guide rail 16 is arranged along the length direction of the base plate 4, and the rack 12 is arranged along the same direction as the guide rail 16. This structure allows the tension meter 7 to slide along the length direction of the base plate 4.

[0036] In this embodiment, the on-load tap changer movable contact 17 includes a copper plate 18, the copper plate 18 is provided with a sleeve hole 19 in the middle, the copper plate 18 is provided with a contact seat 20 at the bottom, the contact seat 20 is provided with two groups of slip ring contacts 21 at one end, the slip ring contact 21 includes two spring sheets 22 on the left and right sides, and the inner side of the spring sheet 22 is provided with a contact 23.

[0037] The working principle of the utility model is as follows:

[0038] In the test, the copper plate 18 of the on-load tap changer movable contact 17 is clamped into the placing groove 3, the shaft rod 5 at the bottom of the base plate 4 is inserted into the sleeve hole 19 on the copper plate 18, the pull plate 8 is clamped into the inner side of the contact 23 of the slip ring contact 21, the rotating handle 15 is rotated to drive the rotating rod 13 to rotate the gear 14, the gear 14 drives the rack 12 to move, so that the tension meter 7 moves along the guide rail 16, the pull plate 8 at the output end of the tension meter 7 receives the tension of the contact 23 and the spring sheet 22, so that the tension meter 7 displays the tension value, the value displayed by the tension meter 7 tests the clamping force of the slip ring contact 21, so that the purpose of testing the slip ring contact 21 is achieved; meanwhile, the direction of the test mechanism 2 is rotated, so that the left and right sides of the slip ring contact 21 can be tested respectively.

[0039] The installation mode, connection mode or setting mode of the on-load tap changer slip ring contact test tool of the utility model are all common mechanical modes, as long as the beneficial effects can be achieved, the implementation can be carried out.

[0040] The technologies not described in detail in the utility model are all known technologies, and the contents represented in the drawings are part of the description.

[0041] The above content is a further detailed description of the utility model combined with the specific implementation, and cannot be considered as limited to these descriptions. For ordinary skilled persons in the technical field to which the utility model belongs, without departing from the concept of the utility model, a number of simple deductions or substitutions can be made, which should be considered as belonging to the protection range determined by the claims of the utility model.

Claims

1. A test fixture for a collector ring contact of a load tap changer, characterized by: The utility model relates to a test device for testing the tensile strength of rubber, including bottom plate (1), test mechanism (2), the bottom plate (1) top central place is equipped with the placement groove (3), test mechanism (2) includes base plate (4), the base plate (4) bottom is equipped with axle rod (5), the base plate (4) top is equipped with slide table (6), the slide table (6) top is equipped with tensile meter (7), and the tensile meter (7) output is equipped with pull plate (8), and the pull plate (8) is equipped with guide block (9) on, and the base plate (4) one end is equipped with guide slot (10), and the guide block (9) with the guide slot (10) sliding connection, and the tensile meter (7) bottom is equipped with mounting plate (11), and the mounting plate (11) surface is equipped with rack (12), and the base plate (4) top is equipped with rotary rod (13) in the one end away from the guide slot (10), and the rotary rod (13) one end is equipped with gear (14), and the gear (14) with rack (12) engages.

2. A test fixture for a collector ring contact of a load tap changer according to claim 1, characterized in that: The rotary rod (13) one end away from the gear (14) is equipped with hand wheel (15).

3. A test fixture for a collector ring contact of a load tap changer according to claim 1, characterized in that: The base plate (4) top both sides are equipped with guide rail (16), and the slide table (6) bottom both sides are respectively with two guide rail (16) sliding connection.

4. A test fixture for a collector ring contact of a load tap changer according to claim 3, characterized in that: The guide rail (16) surface is equipped with scale.

5. A test fixture for a collector ring contact of a load tap changer according to claim 3, characterized in that: The guide rail (16) is along base plate (4) length direction setting, and rack (12) with the guide rail (16) along the same direction setting.

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