Power transformer testing device

Abstract

The utility model relates to the technical field of transformer test stands, and provides a power transformer testing device which comprises a detection cabinet, a lifting mechanism, a clamping mechanism and a convenient moving mechanism, the outer side of the detection cabinet is fixedly connected with two connecting cabinet bodies, the lifting mechanism is arranged on the outer side of the detection cabinet and located between the sides, close to each other, of the two connecting cabinet bodies, and the clamping mechanism is arranged on the outer side of the detection cabinet. A clamping mechanism is arranged above the lifting mechanism, and a convenient moving mechanism is arranged below the lifting mechanism; the lifting mechanism comprises a fixed bottom plate. By means of the technical scheme, the problems that in the related technology, the device is directly supported through universal wheels, the stability of the device is poor in the using process, especially when a lifting rod ascends to a high height, due to the fact that the gravity center of a power transformer is high, the overall stability of the testing device is poor, and then shaking is likely to be generated in the testing process are solved; the problems that the test is influenced, and seriously, the toppling of the power transformer is easily caused, so that the danger is generated are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of transformer test benches, and in particular to a power transformer testing device. Background Art

[0002] Transformer testing is the main mechanical equipment used for factory inspection, evaluation test, safety of use and main electrical performance test of power transformers. Through display devices, control devices and detection devices, real-time monitoring and automatic measurement and control of the entire test process are realized. After searching, a Chinese patent discloses a transformer test device for power construction (authorization announcement number CN 216013456U). Although the patent technology can "drive the nut to move in relative directions through the screw rod, and drive the pressure plate to clamp the left and right sides of the transformer through the nut to stabilize the position of the transformer", in actual application, the patent technology is directly supported by the universal wheel pair device, which leads to poor stability when used, especially when the lifting rod is raised to a higher height. Due to the high center of gravity of the power transformer, the overall stability of the test device is deviated, and it is easy to shake during the test, affecting the test. In serious cases, it is easy to cause the power transformer to tip over, which is dangerous and not conducive to actual application. Utility Model Content

[0003] The utility model proposes a power transformer testing device, which solves the problem in the related art that the support is directly provided by a universal wheel pair device, which leads to poor stability during use, especially when the lifting rod is raised to a higher height. Since the center of gravity of the power transformer is higher, the overall stability deviation of the testing device is caused, and shaking is likely to occur during the test, affecting the test. In serious cases, the power transformer is likely to topple over, which leads to dangerous problems.

[0004] The technical scheme of the utility model is as follows: A power transformer testing device, comprising a detection cabinet, a lifting mechanism, a clamping mechanism and a convenient moving mechanism, wherein the outer side of the detection cabinet is fixedly connected to two connected cabinets, the outer side of the detection cabinet and a lifting mechanism is arranged between the two connected cabinets on the side close to each other, a clamping mechanism is arranged above the lifting mechanism, and a convenient moving mechanism is arranged below the lifting mechanism; the lifting mechanism comprises a fixed bottom plate, the outer side of the detection cabinet and a fixed bottom plate is fixedly connected between the two connected cabinets on the side close to each other, the outer side of the detection cabinet and a lifting plate is slidably connected between the two connected cabinets on the side close to each other, two struts are symmetrically rotatably connected between the top of the fixed bottom plate and the bottom of the lifting plate, two first slide grooves are symmetrically provided on the top of the fixed bottom plate and the bottom of the lifting plate, a first slide rod is fixedly connected between the inner walls of the first slide groove, a first slider is slidably connected to the outer side of the first slider, the outer side of the first slider is slidably connected to the inner wall of the first slide groove, the side close to the first slider is rotatably connected to one end of the strut, and the central positions of the four struts are rotatably connected through a connecting rod.

[0005] Furthermore, the lifting mechanism also includes a hydraulic cylinder, and the hydraulic cylinder is fixedly installed on the top of the fixed base plate, wherein a connecting plate is fixedly connected between the adjacent sides of the two first sliding blocks, and the piston rod of the hydraulic cylinder is fixedly connected to the outer side of the connecting plate.

[0006] Furthermore, the clamping mechanism includes a second slide groove, a second slide groove is opened on the top of the lifting plate, a bidirectional screw rod is rotatably connected between the inner walls of the second slide groove, the outer side of the bidirectional screw rod is symmetrically threaded with two second sliders, the outer side of the second slider is slidably connected to the inner wall of the second slide groove, the top of the second slider is fixedly connected with a positioning plate, and the adjacent side of the positioning plate is symmetrically fixedly connected with two limit plates.

[0007] Furthermore, the clamping mechanism also includes an operating groove, an operating groove is opened inside the lifting plate, a first bevel gear is rotatably connected between the inner walls of the operating groove, one end of the bidirectional screw rod extends into the interior of the operating groove and is fixedly connected to a second bevel gear, the second bevel gear is meshingly connected to the first bevel gear, and the central axis of the first bevel gear extends to the outside of the lifting plate and is fixedly connected to a rotating handle.

[0008] Furthermore, the convenient moving mechanism includes a raised support plate, the bottom of the lifting plate is fixedly connected to four raised support plates, the bottoms of the four raised support plates are fixedly connected to universal wheels, four through grooves are opened on the top of the fixed bottom plate, and the bottom of the fixed bottom plate is fixedly connected to four shock-absorbing bases.

[0009] Furthermore, a third slide groove is provided on one side of the connecting cabinet body, and limiting blocks are fixedly connected on both sides of the lifting plate and located inside the third slide groove, and the outer side of the limiting block is slidably connected to the inner wall of the third slide groove.

[0010] Furthermore, rollers are fixedly connected to the outer side of the first sliding block and inside the first sliding groove, and the outer side of the rollers is rollingly connected to the inner wall of the first sliding groove.

[0011] The working principle and beneficial effects of the utility model are:

[0012] The utility model provides a lifting mechanism, which can lift the power transformer placed on the lifting plate, thereby facilitating the operation of the tester, so as to adapt to the use of testers of different heights and the testing of power transformers of different heights; at the same time, on the basis of the lifting mechanism proposed above, a universal wheel that moves accordingly is added, so that when the lifting plate rises to a certain height, it can be switched to the shock-absorbing base for support, and can achieve stable support while shock-absorbing the entire device, greatly increasing the stability of the test device, and when it needs to be moved, the lifting plate can be lowered to achieve universal wheel support, which is convenient for movement, and solves the problem of directly supporting the device through universal wheels in the related art, which leads to poor stability during use, especially when the lifting rod rises to a higher height, due to the higher center of gravity of the power transformer, the overall stability of the test device is deviated, and it is easy to shake during the test, affecting the test, and seriously, it is easy to cause the power transformer to topple over, thereby causing a dangerous problem, which is conducive to practical application. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0014] Figure 1 It is the external three-dimensional of the lifting mechanism of the utility model;

[0015] Figure 2 This is a front cross-sectional view of the utility model when the lifting plate is raised;

[0016] Figure 3 This is a front and cross-sectional view of the utility model when the lifting plate is in a descending state;

[0017] Figure 4 This is a top view of the lifting plate of the utility model;

[0018] Figure 5 This is the assembly drawing of the connecting plate of the utility model.

[0019] In the figure: 1. detection cabinet; 2. connecting cabinet body; 3. fixed bottom plate; 4. support rod; 5. first slider; 6. first slide groove; 7. first slide rod; 8. roller; 9. pad support plate; 10. universal wheel; 11. through groove; 12. shock-absorbing base; 13. hydraulic cylinder; 14. connecting plate; 15. second slide groove; 16. two-way screw rod; 17. second slider; 18. positioning plate; 19. limit plate; 20. first bevel gear; 21. second bevel gear; 22. operating groove; 23. lifting plate; 24. third slide groove; 25. limit block. DETAILED DESCRIPTION

[0020] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Example 1

[0022] like Figure 1 to Figure 5 As shown, this embodiment proposes a power transformer testing device, including a testing cabinet 1, a lifting mechanism, a clamping mechanism and a convenient moving mechanism. The outer side of the testing cabinet 1 is fixedly connected to two connecting cabinets 2, and a lifting mechanism is arranged on the outer side of the testing cabinet 1 and between the two connecting cabinets 2 on the side close to each other, a clamping mechanism is arranged above the lifting mechanism, and a convenient moving mechanism is arranged below the lifting mechanism; the lifting mechanism includes a fixed bottom plate 3, the outer side of the testing cabinet 1 and between the two connecting cabinets 2 on the side close to each other is fixedly connected to the fixed bottom plate 3, the outer side of the testing cabinet 1 and between the two connecting cabinets 2 on the side close to each other A lifting plate 23 is slidably connected between the adjacent sides of the cabinet body 2, and two support rods 4 are symmetrically rotatably connected between the top of the fixed bottom plate 3 and the bottom of the lifting plate 23. Two first sliding grooves 6 are symmetrically provided on the top of the fixed bottom plate 3 and the bottom of the lifting plate 23. A first sliding rod 7 is fixedly connected between the inner walls of the first sliding groove 6, and a first sliding block 5 is slidably connected to the outer side of the first sliding rod 7. The outer side of the first sliding block 5 is slidably connected to the inner wall of the first sliding groove 6, and the adjacent sides of the first sliding block 5 are rotatably connected to one end of the support rod 4, and the central positions of the four support rods 4 are rotatably connected by a connecting rod.

[0023] In this embodiment, by setting up a lifting mechanism in the utility model, the power transformer placed on the lifting plate 23 can be lifted and lowered, which is convenient for the tester to operate, so as to adapt to the use of testers of different heights and the testing of power transformers of different heights; at the same time, on the basis of the above-mentioned lifting mechanism, a universal wheel 10 that moves accordingly is added, so that when the lifting plate 23 rises to a certain height, it can switch to the shock-absorbing base 12 for support, which can achieve stable support while shock-absorbing the entire device, greatly increasing the stability of the test device, and when it needs to be moved, the lifting plate 23 can be lowered to achieve support from the universal wheel 10, which is convenient for movement.

[0024] Example 2

[0025] like Figure 1 to Figure 5 As shown, based on the same concept as the above-mentioned embodiment 1, this embodiment further proposes a power transformer testing device, the lifting mechanism also includes a hydraulic cylinder 13, the hydraulic cylinder 13 is fixedly installed on the top of the fixed bottom plate 3, wherein a connecting plate 14 is fixedly connected between the sides where the two first sliding blocks 5 are close to each other, and the piston rod of the hydraulic cylinder 13 is fixedly connected to the outer side of the connecting plate 14, which can provide power drive for the lifting and lowering of the lifting plate 23.

[0026] Among them, the clamping mechanism includes a second slide groove 15, and the second slide groove 15 is opened on the top of the lifting plate 23. A bidirectional screw rod 16 is rotatably connected between the inner walls of the second slide groove 15, and the outer side of the bidirectional screw rod 16 is symmetrically threaded with two second sliders 17. The outer side of the second slider 17 is slidably connected to the inner wall of the second slide groove 15, and the top of the second slider 17 is fixedly connected with a positioning plate 18, and the side close to the positioning plate 18 is symmetrically fixedly connected with two limit plates 19, which can provide clamping for the power transformer.

[0027] Among them, the clamping mechanism also includes an operating groove 22, an operating groove 22 is opened inside the lifting plate 23, a first bevel gear 20 is rotatably connected between the inner walls of the operating groove 22, one end of the bidirectional screw rod 16 extends to the inside of the operating groove 22 and is fixedly connected to the second bevel gear 21, the second bevel gear 21 is meshingly connected to the first bevel gear 20, the central axis of the first bevel gear 20 extends to the outside of the lifting plate 23 and is fixedly connected to a rotating handle, by rotating the rotating handle, the first bevel gear 20 can be driven to rotate, and the second bevel gear 21 can be driven to rotate through meshing, thereby driving the bidirectional screw rod 16 to rotate.

[0028] Among them, the convenient moving mechanism includes a raised support plate 9, four raised support plates 9 are fixedly connected to the bottom of the lifting plate 23, and the bottoms of the four raised support plates 9 are fixedly connected with universal wheels 10. Four through grooves 11 are opened on the top of the fixed base plate 3, and four shock-absorbing bases 12 are fixedly connected to the bottom of the fixed base plate 3, which can provide shock absorption for the device. The model of the shock-absorbing base 12 is JSA-400 air spring shock absorber.

[0029] Among them, a third slide groove 24 is opened on the side close to the connecting cabinet 2, and limiting blocks 25 are fixedly connected on both sides of the lifting plate 23 and inside the third slide groove 24. The outer side of the limiting block 25 is slidably connected to the inner wall of the third slide groove 24, which can provide guidance and limitation for the lifting and lowering of the lifting plate 23.

[0030] The outer side of the first sliding block 5 and the inside of the first sliding groove 6 are fixedly connected with rollers 8 , and the outer side of the rollers 8 is rollingly connected to the inner wall of the first sliding groove 6 to assist the sliding of the first sliding block 5 .

[0031] The working principle is that the power transformer is placed on the lifting plate 23, and the first bevel gear 20 is rotated by turning the handle, thereby driving the second bevel gear 21 to rotate, and driving the bidirectional screw rod 16 to rotate, so that the two second sliders 17 slide and drive the two positioning plates 18 and the limit plate 19 to slide toward the side close to each other to clamp the power transformer. When the power transformer is tested by the detection cabinet 1, the hydraulic cylinder 13 is controlled to work, the connecting plate 14 is pushed to move, and the first slider 5 is driven to move on the first slide bar 7, thereby changing the distance at the bottom of the support rod 4 to achieve the height adjustment of the lifting plate 23. Its lifting principle is similar to that of the elevator, which is an improvement of the prior art. When the lifting plate 23 When in a higher position, the universal wheel 10 is located above the fixed base plate 3. At this time, the shock-absorbing base 12 provides support for the device, thereby making the device run more stably. When the lifting plate 23 is lowered to a lower height, the universal wheel 10 provides support for the device, which can be easily moved. This solves the problem of directly supporting the device through the universal wheel 10 in the related art, which leads to poor stability during use. Especially when the lifting rod is raised to a higher height, due to the higher center of gravity of the power transformer, the overall stability of the test device deviates, and it is easy to shake during the test, affecting the test. In serious cases, it is easy to cause the power transformer to tip over, which in turn causes dangerous problems. This is beneficial to practical applications.

[0032] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A power transformer testing device, characterized in that: The invention comprises a detection cabinet (1), a lifting mechanism, a clamping mechanism and a convenient moving mechanism, wherein the outer side of the detection cabinet (1) is fixedly connected to two connecting cabinets (2), the lifting mechanism is arranged on the outer side of the detection cabinet (1) and between the two connecting cabinets (2) on the side close to each other, the clamping mechanism is arranged above the lifting mechanism, and the convenient moving mechanism is arranged below the lifting mechanism; The lifting mechanism comprises a fixed bottom plate (3), a fixed bottom plate (3) is fixedly connected to the outside of the detection cabinet (1) and is located between the two connected cabinet bodies (2) on the side close to each other, a lifting plate (23) is slidably connected to the outside of the detection cabinet (1) and is located between the two connected cabinet bodies (2) on the side close to each other, two support rods (4) are symmetrically rotatably connected between the top of the fixed bottom plate (3) and the bottom of the lifting plate (23), two first sliding grooves (6) are symmetrically provided at the top of the fixed bottom plate (3) and the bottom of the lifting plate (23), a first sliding rod (7) is fixedly connected between the inner walls of the first sliding groove (6), a first slider (5) is slidably connected to the outside of the first sliding rod (7), the outer side of the first slider (5) is slidably connected to the inner wall of the first sliding groove (6), the side close to the first slider (5) is rotatably connected to one end of the support rod (4), and the central positions of the four support rods (4) are rotatably connected through a connecting rod.

2. A power transformer testing device according to claim 1, characterized in that: The lifting mechanism further comprises a hydraulic cylinder (13), the hydraulic cylinder (13) being fixedly mounted on the top of the fixed bottom plate (3), wherein a connecting plate (14) is fixedly connected between the adjacent sides of the two first sliding blocks (5), and a piston rod of the hydraulic cylinder (13) is fixedly connected to the outer side of the connecting plate (14).

3. A power transformer testing device according to claim 1, characterized in that: The clamping mechanism comprises a second slide groove (15), a second slide groove (15) is provided on the top of the lifting plate (23), a bidirectional screw rod (16) is rotatably connected between the inner walls of the second slide groove (15), two second sliders (17) are symmetrically threadedly connected to the outer side of the bidirectional screw rod (16), the outer side of the second slider (17) is slidably connected to the inner wall of the second slide groove (15), the top of the second slider (17) is fixedly connected with a positioning plate (18), and two limit plates (19) are symmetrically fixedly connected to the adjacent sides of the positioning plate (18).

4. A power transformer testing device according to claim 3, characterized in that: The clamping mechanism further comprises an operating groove (22), the operating groove (22) is provided inside the lifting plate (23), a first bevel gear (20) is rotatably connected between the inner walls of the operating groove (22), one end of the bidirectional screw rod (16) extends into the inside of the operating groove (22) and is fixedly connected to a second bevel gear (21), the second bevel gear (21) is meshingly connected to the first bevel gear (20), and a central axis of the first bevel gear (20) extends to the outside of the lifting plate (23) and is fixedly connected to a rotating handle.

5. A power transformer testing device according to claim 1, characterized in that: The convenient moving mechanism comprises a raised support plate (9), the bottom of the lifting plate (23) is fixedly connected to four raised support plates (9), the bottoms of the four raised support plates (9) are all fixedly connected to universal wheels (10), the top of the fixed bottom plate (3) is provided with four through grooves (11), and the bottom of the fixed bottom plate (3) is fixedly connected to four shock-absorbing bases (12).

6. A power transformer testing device according to claim 1, characterized in that: A third sliding groove (24) is provided on the adjacent side of the connecting cabinet (2), and limiting blocks (25) are fixedly connected on both sides of the lifting plate (23) and located inside the third sliding groove (24), and the outer side of the limiting block (25) is slidably connected to the inner wall of the third sliding groove (24).

7. A power transformer testing device according to claim 1, characterized in that: A roller (8) is fixedly connected to the outer side of the first sliding block (5) and inside the first sliding groove (6), and the outer side of the roller (8) is rollingly connected to the inner wall of the first sliding groove (6).

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