Test transformer

Abstract

The utility model provides a testing transformer, which belongs to the technical field of transformers and comprises a transformer body, a base is fixed at the lower end of the transformer body in a bolting manner, traveling wheels are arranged at the lower end of the base, a sliding groove is arranged on the base along the horizontal direction, the sliding groove comprises a plurality of longitudinal grooves and a plurality of transverse grooves, and a strip-shaped block is arranged in the sliding groove in a sliding manner. Supporting legs are arranged at one ends of the strip-shaped blocks, the strip-shaped blocks slide to enable the supporting legs to move to the outer portion of the circumferential direction of the base, and the multiple supporting legs abut against the ground so that the contact range of the base and the ground can be enlarged. According to the testing transformer, the contact range of the base and the ground is enlarged, the supporting effect of the base on the transformer body is improved, and the transformer is not prone to toppling over.

Description

Technical Field

[0001] The utility model belongs to the technical field of transformers, and more specifically relates to a test transformer. Background Art

[0002] The test transformer is a kind of power detection instrument, which is mainly used for power systems, industrial and mining enterprises, scientific research departments, etc. to conduct insulation strength and leakage tests on various electrical equipment, electrical components, and insulating materials under power frequency or DC high voltage. The test transformer includes single-phase test transformer and multi-phase test transformer. Among them, the single-phase test transformer is relatively light in weight. When in use, the single-phase test transformer is placed vertically, and the center of gravity of the single-phase test transformer is at a higher position. When it is hit by foreign objects or human error, it is easy to cause the single-phase test transformer to fall over, resulting in damage to the single-phase test transformer. Utility Model Content

[0003] The utility model aims to provide a test transformer, aiming to solve the problem that the test transformer mentioned in the background technology is easy to fall over and be damaged.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a test transformer, including a transformer body, a base is bolted and fixed at the lower end of the transformer body, a walking wheel is provided at the lower end of the base, a slide groove is provided on the base in the horizontal direction, the slide groove includes multiple longitudinal grooves and multiple transverse grooves, a strip block is slidably arranged in the slide groove, a supporting foot is provided at one end of the strip block, the strip block is slid to move the supporting foot to the outside of the circumference of the base, and the multiple supporting feet are in contact with the ground to increase the contact range between the base and the ground.

[0005] In a possible implementation, the longitudinal groove is provided on the upper end surface of the base, and the transverse groove is provided on the lower end surface of the base.

[0006] In a possible implementation, a first gear is rotatably provided on the upper end surface of the base, the number of the longitudinal grooves is two, the two longitudinal grooves are symmetrically arranged on both sides of the first gear, a rack segment is provided in the middle of the bar block, and the rack segments on the two bar blocks arranged in the two longitudinal grooves are arranged opposite to each other and are both engaged with the first gear.

[0007] In a possible implementation, a second gear is rotatably provided on the lower end surface of the base, the number of the transverse grooves is two, the two transverse grooves are symmetrically arranged on both sides of the second gear, and the rack segments on the two bar blocks arranged in the two transverse grooves are arranged opposite to each other and are both engaged with the second gear.

[0008] In a possible implementation, a connecting shaft is provided through the middle of the base from top to bottom, the first gear is rotatably connected to the upper end of the connecting shaft, and the second gear is rotatably connected to the lower end of the connecting shaft.

[0009] In a possible implementation, the slide groove includes a first groove body and a second groove body connected to each other, the first groove body is located on the inner side of the second groove body, the width of the first groove body is greater than the width of the second groove body, the bar block includes a first block body and a second block connected to each other, the first block body is slidably set in the first groove body, the second block body is slidably set in the second groove body, and the width of the first block body is greater than the width of the second groove body, and the rack segment is set on the second block body.

[0010] In a possible implementation, the second block includes sliding segments arranged at both ends and a reduced diameter segment connected between the two sliding segments, the width of the sliding segment is adapted to the width of the second trough body, the width of the reduced diameter segment is smaller than the width of the second trough body, and the rack segment is arranged on the reduced diameter segment.

[0011] In a possible implementation, the sliding section includes a head section and a tail section, the head section extends outward to the outside of the second slot body, the supporting foot is connected to the head section, and the tail section is located inside the second slot body.

[0012] In a possible implementation, a limit assembly is provided in the second groove body, and the limit assembly is used to limit the sliding range of the bar block. The limit assembly includes a first limit block and a second limit block. The first limit block and the second limit block are arranged on the side wall of the second groove body at intervals and are located on both sides of the tail section, so as to limit the movement range of the tail section.

[0013] In a possible implementation, the supporting foot includes a longitudinal rod, the longitudinal rod is longitudinally threadedly connected to the strip block, and a rubber pad is provided at the lower end of the longitudinal rod.

[0014] The beneficial effect of a test transformer provided by the utility model is that: compared with the prior art, the test transformer of the utility model is provided with a plurality of longitudinal grooves and transverse grooves on the base, and strip blocks are slidably arranged in the longitudinal grooves and the transverse grooves, and a supporting foot is arranged at one end of the strip block. When in use, the sliding strip block moves the supporting foot to the outside of the circumference of the base and makes the supporting foot contact the ground. The plurality of supporting feet are arranged around the circumference of the base and connected to the base through the strip blocks, which is equivalent to increasing the contact range between the base and the ground, improving the supporting effect of the base on the transformer body, and making the transformer body not easy to tip over when hit by foreign objects. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 A schematic diagram of the main structure of a test transformer provided by an embodiment of the utility model;

[0017] Figure 2 A schematic diagram of the top view of the base provided in an embodiment of the utility model;

[0018] Figure 3 A bottom view structural schematic diagram of a base provided in an embodiment of the utility model;

[0019] Figure 4 For along Figure 2 The cross-sectional structure diagram along the AA line;

[0020] Figure 5 For along Figure 2 Cross-sectional structure diagram along line BB.

[0021] Description of reference numerals:

[0022] 1. Transformer body; 2. Base; 21. Longitudinal groove; 22. Transverse groove; 23. First installation groove; 24. Second installation groove; 201. First groove body; 202. Second groove body; 3. Travel wheel; 4. Bar block; 41. First block body; 42. Second block body; 421. Head section; 422. Tail section; 423. Reduced diameter section; 4231. Make way groove; 5. Support foot; 51. Longitudinal rod; 52. Handle; 53. Rubber pad; 6. Connecting shaft; 61. First gear; 62. Second gear; 63. Rotating bearing; 64. Limit nut; 71. First limit block; 72. Second limit block. DETAILED DESCRIPTION

[0023] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0024] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0025] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0027] See also Figures 1 to 5 Now, a test transformer provided by the utility model is described. The test transformer comprises a transformer body 1, a base 2 is bolted and fixed at the lower end of the transformer body 1, a walking wheel 3 is arranged at the lower end of the base 2, a slide groove is arranged on the base 2 in the horizontal direction, the slide groove comprises a plurality of longitudinal grooves 21 and a plurality of transverse grooves 22, a strip block 4 is slidably arranged in the slide groove, a support foot 5 is arranged at one end of the strip block 4, the support foot 5 is moved to the outside of the base 2 in the circumferential direction by sliding the strip block 4, and a plurality of support feet 5 abut against the ground to increase the contact range between the base 2 and the ground.

[0028] The utility model provides a test transformer. Compared with the prior art, a plurality of longitudinal grooves 21 and transverse grooves 22 are arranged on a base 2, and a strip block 4 is slidably arranged in the longitudinal grooves 21 and the transverse grooves 22. A supporting foot 5 is arranged at one end of the strip block 4. When in use, the strip block 4 is slid to move the supporting foot 5 to the outside of the circumference of the base 2, and the supporting foot 5 is abutted against the ground. The plurality of supporting feet 5 are arranged around the circumference of the base 2 and are connected to the base 2 through the strip block 4, which is equivalent to increasing the contact range between the base 2 and the ground, improving the supporting effect of the base 2 on the transformer body 1, and making the transformer body 1 not easy to tip over when hit by foreign objects.

[0029] In some embodiments, there are four running wheels 3, which are arranged in a rectangular shape on the lower end surface of the base 2. In this embodiment, the running wheels 3 are universal wheels with a braking function. By setting the running wheels 3, it is convenient for operators to transfer the transformer body 1.

[0030] In some embodiments, see Figures 2 to 5A first mounting groove 23 is provided in the middle of the upper end surface of the base 2, a first shaft body is longitudinally provided in the first mounting groove 23, a first gear 61 is rotatably provided on the first shaft body, a rotating bearing 63 is provided between the first gear 61 and the first shaft body, and two limiting nuts 64 are also threadedly connected to the first shaft body, the two limiting nuts 64 are respectively provided on the upper and lower sides of the first gear 61, and abut against the rotating bearing 63, and the two limiting nuts 64 are used to limit the position of the first gear 61 to prevent it from sliding on the first shaft body.

[0031] In this embodiment, there are two longitudinal grooves 21, and the two longitudinal grooves 21 are symmetrically arranged on both sides of the first mounting groove 23 and are both connected to the first mounting groove 23. In this embodiment, a rack segment is provided in the middle of each strip block 4. During assembly, the two strip blocks 4 arranged in the two longitudinal grooves 21 are located on both sides of the first gear 61, and the rack segments on the two strip blocks 4 are arranged relative to each other and are meshed with the first gear 61. Through the above arrangement, with the help of the meshing relationship between the first gear 61 and the rack segment, when moving the strip block 4 in any one of the longitudinal grooves 21, the strip block 4 in the other longitudinal groove 21 will also be driven to move in the opposite direction, thereby reducing the operation amount of the operator, so that the strip blocks 4 in the two longitudinal grooves 21 can be simultaneously extended outward to the outside of the base 2.

[0032] In this example, see Figures 2 to 5 A second mounting groove 24 is provided in the middle of the lower end surface of the base 2, a second shaft body is longitudinally provided in the second mounting groove 24, a second gear 62 is rotatably provided on the second shaft body, a rotating bearing 63 is provided between the second gear 62 and the second shaft body, and two limiting nuts 64 are also threadedly connected to the second shaft body, the two limiting nuts 64 are respectively provided on the upper and lower sides of the second gear 62, and abut against the rotating bearing 63, and the two limiting nuts 64 are used to limit the position of the second gear 62 to prevent it from sliding on the second shaft body.

[0033] In this embodiment, there are two transverse grooves 22, and the two transverse grooves 22 are symmetrically arranged on both sides of the second mounting groove 24 and are both connected to the second mounting groove 24. During assembly, the two bar blocks 4 arranged in the two transverse grooves 22 are located on both sides of the second gear 62, and the rack segments on the two bar blocks 4 are relatively arranged and are both meshed with the second gear 62. Through the above arrangement, with the help of the meshing relationship between the second gear 62 and the rack segment, when the bar block 4 in any one of the transverse grooves 22 is moved, the bar block 4 in the other transverse groove 22 will also be driven to move in the opposite direction, thereby reducing the amount of operation of the operator, so that the bar blocks 4 in the two transverse grooves 22 can be simultaneously extended outward to the outside of the base 2.

[0034] In some embodiments, the first axis and the second axis are the same connecting axis 6 that passes through the base 2 from top to bottom. The middle part of the connecting axis 6 is bolted and fixed to the base 2. The first gear 61 is rotatably connected to the upper end of the connecting axis 6, and the second gear 62 is rotatably connected to the lower end of the connecting axis 6.

[0035] In some embodiments, see Figures 2 to 5 The cross-sectional structures of the longitudinal groove 21 and the transverse groove 22 are the same. The longitudinal groove 21 and the transverse groove 22 both include a first groove body 201 and a second groove body 202, wherein the first groove body 201 is arranged inside the second groove body 202, the width of the first groove body 201 is greater than the width of the second groove body 202, and the first groove body 201 and the second groove body 202 are interconnected to form a "T"-shaped structure. In this embodiment, the strip block 4 includes a first block body 41 and a second block body 42 connected to each other, wherein the first block body 41 is slidably installed in the first groove body 201, and the second block body 42 is slidably installed in the second groove body 202. In order to prevent the strip block 4 from longitudinally separating from the longitudinal groove 21 or the transverse groove 22, the width of the first block body 41 is set to be greater than the width of the second groove body 202, and the longitudinal movement of a block is limited by the second groove body 202. In this embodiment, the first installation groove 23 and the second installation groove 24 are respectively connected to the second groove body 202 on the same side thereof, and the rack segment on the strip block 4 is arranged on the second block body 42.

[0036] In some embodiments, see Figure 2 and Figure 3 In order to avoid friction between the rack segment on the bar block 4 and the side wall of the second slide groove, which may cause damage to the rack segment, sliding segments are set at both ends of the second block 42, and a reduced diameter segment 423 is set between the two sliding segments, wherein the width of the sliding segment is adapted to the width of the second slot body 202, the width of the reduced diameter segment 423 is smaller than the width of the second slot body 202, and the rack segment is set on the reduced diameter segment 423. Specifically, the side of the reduced diameter segment 423 facing the first gear 61 or the second gear 62 is recessed inward to form a clearance groove 4231, and the rack is installed in the clearance groove 4231 so that there is a certain gap between the tooth top of the gear teeth on the rack and the side wall of the second slot body 202.

[0037] In this embodiment, the above-mentioned sliding section includes a head section 421 and a tail section 422, wherein the head section 421 extends outward to the outside of the second slot body 202, the supporting foot 5 is connected to the head section 421, and the tail section 422 is located inside the second slot body 202.

[0038] In use, in order to prevent the bar block 4 from sliding out of the longitudinal groove 21 or the transverse groove 22 when sliding horizontally, a limiting assembly is further provided in the second slot body 202 to limit the sliding range of the bar block 4. Specifically, the limiting assembly includes a first limiting block 71 and a second limiting block 72, wherein the first limiting block 71 and the second limiting block 72 are arranged on the side wall of the second slot body 202 at intervals and are located on both sides of the tail section 422, and the first limiting block 71 and the second limiting block 72 limit the sliding range of the bar block 4 by limiting the moving range of the tail section 422.

[0039] In some embodiments, see Figures 1 to 5 The above-mentioned supporting foot 5 includes a longitudinal rod 51, which passes through the end of the strip block 4 at one end of the head section 421 in the horizontal and vertical directions, and is threadedly connected to the strip block 4. The upper end of the longitudinal rod 51 is located above the strip block 4, and a handle 52 is provided at the upper end of the longitudinal rod 51. The lower end of the longitudinal rod 51 is located below the strip block 4, and a rubber pad 53 is provided at the lower end of the longitudinal rod 51. When in use, the height of the rubber pad 53 can be adjusted by rotating the handle 52, so that the rubber pad 53 is in contact with or away from the ground.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A test transformer, characterized in that: The invention comprises a transformer body (1), the lower end of which is bolted and fixed with a base (2), the lower end of which is provided with a walking wheel (3), a slide groove is provided on the base (2) in a horizontal direction, the slide groove comprises a plurality of longitudinal grooves (21) and a plurality of transverse grooves (22), a strip block (4) is slidably provided in the slide groove, one end of the strip block (4) is provided with a supporting foot (5), the strip block (4) is slid to move the supporting foot (5) to the outside of the circumference of the base (2), and a plurality of the supporting feet (5) are in contact with the ground, so as to increase the contact range between the base (2) and the ground.

2. A test transformer as claimed in claim 1, characterized in that: The longitudinal groove (21) is arranged on the upper end surface of the base (2), and the transverse groove (22) is arranged on the lower end surface of the base (2).

3. A test transformer as claimed in claim 2, characterized in that: A first gear (61) is rotatably provided on the upper end surface of the base (2); the number of the longitudinal grooves (21) is two, and the two longitudinal grooves (21) are symmetrically arranged on both sides of the first gear (61); a rack segment is provided in the middle of the bar block (4); the rack segments on the two bar blocks (4) arranged in the two longitudinal grooves (21) are arranged opposite to each other and are both meshed with the first gear (61).

4. A test transformer as claimed in claim 3, characterized in that: A second gear (62) is rotatably provided on the lower end surface of the base (2), the number of the transverse grooves (22) is two, the two transverse grooves (22) are symmetrically arranged on both sides of the second gear (62), and the rack segments on the two bar blocks (4) arranged in the two transverse grooves (22) are arranged opposite to each other and are both meshed with the second gear (62).

5. A test transformer as claimed in claim 4, characterized in that: A connecting shaft (6) is provided through the middle of the base (2) from top to bottom, the first gear (61) is rotatably connected to the upper end of the connecting shaft (6), and the second gear (62) is rotatably connected to the lower end of the connecting shaft (6).

6. A test transformer as claimed in claim 4, characterized in that: The slide groove comprises a first groove body (201) and a second groove body (202) which are connected to each other, the first groove body (201) is located on the inner side of the second groove body (202), the width of the first groove body (201) is greater than the width of the second groove body (202), the bar block (4) comprises a first block body (41) and a second block body (42) which are connected to each other, the first block body (41) is slidably arranged in the first groove body (201), the second block body (42) is slidably arranged in the second groove body (202), the width of the first block body (41) is greater than the width of the second groove body (202), and the rack segment is arranged on the second block body (42).

7. A test transformer as claimed in claim 6, characterized in that: The second block (42) comprises sliding sections arranged at two ends and a reduced diameter section (423) connected between the two sliding sections, the width of the sliding section is adapted to the width of the second trough (202), the width of the reduced diameter section (423) is smaller than the width of the second trough (202), and the rack section is arranged on the reduced diameter section (423).

8. A test transformer as claimed in claim 7, characterized in that: The sliding section comprises a head section (421) and a tail section (422), the head section (421) extending outward to the outside of the second slot body (202), the supporting foot (5) being connected to the head section (421), and the tail section (422) being located inside the second slot body (202).

9. A test transformer as claimed in claim 8, characterized in that: A limit assembly is provided in the second groove body (202), and the limit assembly is used to limit the sliding range of the bar block (4). The limit assembly comprises a first limit block (71) and a second limit block (72). The first limit block (71) and the second limit block (72) are arranged on the side wall of the second groove body (202) at intervals and are located on both sides of the tail section (422) to limit the moving range of the tail section (422).

10. A test transformer according to claim 1, characterized in that: The supporting foot (5) comprises a longitudinal rod (51), the longitudinal rod (51) is longitudinally threadedly connected to the strip block (4), and a rubber pad (53) is provided at the lower end of the longitudinal rod (51).

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