Detection tool for center shaft chuck of on-load tap-changer

Abstract

The utility model discloses a detection tool for an on-load tap-changer center shaft chuck, which comprises a bottom plate and a detection mechanism, the top of the bottom plate is provided with a placing groove, the detection mechanism comprises a base plate, one side of the bottom of the base plate is provided with a shaft rod, two sides of the surface of the base plate close to the shaft rod are both provided with through grooves, and the through grooves are communicated with the placing groove. Sliding tables are arranged at the two ends of the top of the base plate in a sliding mode, tension meters are arranged at the tops of the sliding tables, embedding plates are arranged at the output ends of the tension meters, the two embedding plates penetrate through the two through grooves respectively and are arranged on the two sides of the shaft rod respectively, racks are arranged on one sides of the bottoms of the sliding tables, and mounting plates are arranged at the two ends of the bottom of the base plate. And rotating rods are rotationally arranged at the tops of the mounting plates correspondingly, gears are arranged at one ends of the rotating rods correspondingly, and the gears are engaged with the racks correspondingly. According to the utility model, the measurement accuracy and the measurement efficiency of the central shaft chuck are effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to detection frock technical field, concretely relates to a detection frock of on-load tap changer center axle chuck. 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 under the excitation or load state of transformer, changes the tap of transformer winding, adjusts the number of turns of winding, thereby adjusts the voltage ratio of transformer, realizes the purpose of voltage regulation.The circuit is composed of transition circuit, selection circuit and voltage regulating circuit, and the structure can be divided into switching switch, tap selector and operating mechanism three parts.

[0004] No-excitation tap changer: needs to operate under the condition 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 shown in Figure 5 The existing on-load tap changer moving contact, when measuring the on-load tap changer moving contact, the on-load tap changer moving contact bottom center axle chuck inner and outer clamping force can be measured to prevent the center axle chuck inner and outer clamping force from being different due to the deviation of spring sheet production and processing angle or assembly riveting, thereby causing the center axle chuck to appear excessive wear or eccentric wear phenomenon, or the clamping instability caused by the insufficient clamping force of center axle chuck, resulting in excessive resistance and heating / transition ablation.

[0006] The existing center axle chuck testing method is generally to hang on the tensile meter by using soft material, and the clamping force of center axle chuck is measured by manually pulling the tensile meter, the measurement error is large, and the operation is more troublesome in actual use, thereby affecting the measurement accuracy and measurement efficiency of center axle chuck as a whole.

[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 a detection frock of on-load tap changer center axle chuck to solve the problems in the above background.

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

[0010] A kind of detection tool of on-load tap changer center shaft chuck, including bottom plate, detection mechanism, the bottom plate top is equipped with placement slot, the detection mechanism includes base plate, the base plate bottom side is equipped with shaft, the surface of base plate is equipped with two grooves on the both sides close to the shaft, the base plate top both ends are equipped with sliding table, the sliding table top is equipped with tension meter, the tension meter output is equipped with panel, two panels are respectively inserted through two grooves and are respectively located on the both sides of the shaft, the sliding table bottom side is equipped with rack, the base plate bottom both ends are equipped with mounting plate, the mounting plate top is rotatably equipped with rotating rod, the rotating rod one end is equipped with gear, the gear is meshed with the rack respectively.

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

[0012] Preferably, the base plate bottom side is equipped with support rod.

[0013] Beneficial effects

[0014] The above one or more technical solutions in the detection tool of on-load tap changer center shaft chuck provided by the utility model embodiment at least have one of the following technical effects:

[0015] The utility model discloses a technical scheme, when detecting, the copper plate of on-load tap changer contact is embedded in the placement slot, the shaft is inserted into the sleeve hole, so that two panels are respectively clamped in the two contacts of the inside of U-shaped spring piece, when rotating hand wheel, the rotating rod is rotated and drives the gear to rotate, the gear drives the rack to move, the rack drives the sliding table to slide, the sliding table drives the tension meter to move, when the panel is subjected to the force of U-shaped spring piece, the tension meter shows the tension value, so as to realize the purpose of detecting the clamping force of center shaft chuck, the utility model avoids the mode of the prior art for testing center shaft chuck generally using soft material to hang on the tension meter, the clamping force of center shaft chuck is measured by manually pulling the tension meter, the measurement mode error is large, and the operation is more troublesome in actual use, thereby effectively improve the measurement accuracy and measurement efficiency of center shaft chuck. ACCURACY

[0016] Figure 1 It is the bottom plate structure schematic drawing of the utility model;

[0017] Figure 2 It is the detection mechanism structure schematic of the utility model Figure 1 ;

[0018] Figure 3 It is the detection mechanism structure schematic of the utility model Figure 2 ;

[0019] Figure 4The use state structural schematic view of the utility model is shown in the figure.

[0020] Figure 5 The utility model discloses a load-tap-changer movable contact structure schematic view.

[0021] The corresponding relationship between the various figure marks and the component names in the figure is as follows:

[0022] 1, bottom plate, 2, detection mechanism, 3, placing groove, 4, base plate, 5, shaft rod, 6, through slot, 7, sliding table, 8, tensiometer, 9, panel, 10, rack, 11, mounting plate, 12, rotating rod, 13, gear, 14, hand wheel, 15, support rod, 16, load-tap-changer movable contact, 17, copper plate, 18, center shaft chuck, 19, chuck seat, 20, sleeve hole, 21, U-shaped spring piece, 22, contact. DETAILED DESCRIPTION

[0023] The technical scheme of the utility model will be described clearly and completely in combination with the embodiments, and 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 the person skilled in the art without making creative labor belong to the protection scope of the utility model.

[0024] In the description of the utility model, it needs to be understood that the orientation or position relationship indicated by the terms such as "upper", "lower", "left", "right" and the like is the orientation or position relationship based on the figure shown, and is only for the convenience of describing the utility model and simplifying the description, and is not indicative or suggestive of the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0025] In the description of the utility model, it also needs to be explained that, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection" should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or integrally connected, can be mechanically connected, or can be electrically connected, can be directly connected, or indirectly connected through an intermediate medium, can be the communication inside two elements. For the person skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0026] In order to avoid too many unnecessary details, the structure or function belonging to the known will not be described in detail in the following embodiments.

[0027] As Figures 1-5 shown, it is a load-tap-changer center shaft chuck detection tool structure schematic view of a preferred embodiment of the utility model;

[0028] In this embodiment, the bottom plate 1, the detection mechanism 2, the detection mechanism 2 and the bottom plate 1 are in a split structure, the top of the bottom plate 1 is provided with a placing groove 3, the shape of the placing groove 3 is matched with the copper plate 17, the detection mechanism 2 comprises a base plate 4, one side of the bottom of the base plate 4 is provided with a shaft 5, the shaft 5 is perpendicular to the base plate 4, both sides of the surface of the base plate 4 close to the shaft 5 are provided with through grooves 6, both ends of the top of the base plate 4 are slidably provided with sliding tables 7, the top of the sliding table 7 is provided with a tension meter 8, the output ends of the two tension meters 8 are opposite, the output end of the tension meter 8 is provided with a panel 9, the panel 9 is fixed on the output end of the tension meter 8 through a nut, the two panels 9 are respectively inserted through the two through grooves 6 and are respectively arranged on the two sides of the shaft 5, one side of the bottom of the sliding table 7 is provided with a rack 10, the rack 10 is arranged along the length direction of the sliding table 7, both ends of the bottom of the base plate 4 are provided with mounting plates 11, the top of the mounting plate 11 is rotatably provided with a rotating rod 12, the rotating rod 12 and the rack 10 are arranged in a horizontal direction at an angle of 90 degrees, one end of the rotating rod 12 is provided with a gear 13, and the gear 13 is meshed with the rack 10. The rotating rod 12 is rotated to drive the gear 13 to rotate, the gear 13 is rotated to drive the rack 10 to move, and the movement of the rack 10 drives the mounting plate 11 and the tension meter 8 on the top of the mounting plate 11 to move.

[0029] In this embodiment, one end of the rotating rod 12 away from the gear 13 is provided with a hand wheel 14. By rotating the hand wheel 14, the rotating rod 12 is rotated, so that the gear 13 is rotated, and the hand wheel 14 is convenient for the operator to operate.

[0030] In this embodiment, one side of the bottom of the base plate 4 is provided with two supporting rods 15. During measurement, three-point support is formed between the two supporting rods 15 and the shaft, which can enhance the balance of the base plate 4 and avoid inclination during measurement.

[0031] In this embodiment, the movable contact 16 of the on-load tap changer comprises a copper plate 17, a center shaft chuck 18 is arranged at the center of the copper plate 17, the center shaft chuck 18 comprises a chuck seat 19, a sleeve hole 20 is arranged at the center of the chuck seat 19, a U-shaped spring piece 21 is arranged at the top of the chuck seat 19, and contact pieces 22 are arranged at the inner sides of both ends of the U-shaped spring piece 21.

[0032] The working principle of the utility model:

[0033] In the detection, by embedding copper plate 17 of load tap changer starting contact 16 into placing groove 3, inserting shaft 5 into sleeve hole 20, making two embedded plates 9 respectively embedded in two contacts 22 inside U-shaped spring sheet 21, rotating hand wheel 14 to make rotating rod 12 rotate gear 13, moving rack 10 by gear 13, sliding slide 7 by rack 10, moving tension meter 8 by slide 7, embedding plate 9 is forced by U-shaped spring sheet 21, making tension meter 8 display tension value, realizing the purpose of detecting and measuring the clamping force of center shaft clamp 18.

[0034] The detection tool of the center shaft clamp of the load tap changer is characterized by common mechanical installation mode, connection mode or setting mode, and can achieve the beneficial effects.

[0035] The utility model discloses a kind of detection tool of center shaft clamp of load tap changer, its installation mode, connection mode or setting mode are common mechanical mode, as long as the beneficial effects of its can be implemented.

[0036] The above content is further detailed description of the utility model in combination with specific embodiments, and cannot be determined that the specific implementation of the utility model is limited to these descriptions.For ordinary skilled person in the art of the utility model, on the premise of not departing from the concept of the utility model, a number of simple deductions or substitutions can also be made, which should be regarded as belonging to the protection scope determined by the claims submitted by the utility model.

Claims

1. A detection tool for a center shaft collet of an on-load tap changer, characterized in that: The utility model relates to a kind of detection mechanism, including bottom plate (1), detection mechanism (2), the bottom plate (1) top is equipped with placement slot (3), the detection mechanism (2) includes base plate (4), the base plate (4) bottom side is equipped with shaft (5), the surface of base plate (4) is equipped with through slot (6) in the two sides close to the shaft (5), the base plate (4) top both ends are equipped with sliding platform (7), the sliding platform (7) top is equipped with tensile meter (8), and the tensile meter (8) output end is equipped with panel (9), two the panel (9) respectively through two through slots (6) and respectively be equipped with in the two sides of the shaft (5), the sliding platform (7) bottom side is equipped with rack (10), the base plate (4) bottom both ends are equipped with mounting plate (11), the mounting plate (11) top is rotatably equipped with rotating lever (12), the rotating lever (12) one end is equipped with gear (13), and the gear (13) is respectively meshed with rack (10).

2. The detection tooling for the center shaft collet of a load tap changer according to claim 1, characterized in that: The rotating lever (12) is equipped with hand wheel (14) in the end away from the gear (13).

3. The detection tooling for the center shaft collet of a load tap changer according to claim 1, wherein: The base plate (4) bottom side is equipped with support rod (15).

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