Flange quick clamping device and voltage transformer testing device

Abstract

The utility model belongs to voltage transformer technical field discloses a kind of flange quick clamping device and voltage transformer testing device, flange quick clamping device includes: bottom plate, one end on bottom plate is provided with swing rod fixed seat, and the other end is provided with flange butt joint hole, and hydraulic cylinder fixed seat is set on bottom plate between flange butt joint hole and swing rod fixed seat;Swing rod fixed seat is rotatably connected with swing rod, and hydraulic cylinder fixed seat is rotatably connected with hydraulic cylinder body, and swing rod includes two swing single rods;Two swing single rods are connected by connecting shaft;Elastic member is sleeved on swing single rod;Each swing single rod is slidably sleeved with pressing block;The end of each pressing block away from opposite pressing block is provided with hydraulic cylinder connecting shaft;The hydraulic cylinder connecting shaft on two pressing blocks is connected with the hydraulic rod of hydraulic cylinder.The utility model can adapt to flange of different diameters, and flange diameter change only needs to increase or reduce device quantity to realize.

Description

Technical Field

[0001] This utility model belongs to the field of voltage transformer technology, specifically relating to a flange quick clamping device and a voltage transformer testing device. Background Technology

[0002] During voltage transformer (PT) testing, the PT housing needs to be connected and sealed to the test equipment via a flange, typically secured with bolts through the bolt holes on the flange. While bolt fixing offers high reliability, it is time-consuming and inefficient.

[0003] Chinese patent publication number CN209784077U, entitled "A High-Efficiency and Convenient Pipeline Flange Connection Device," provides a high-efficiency and convenient pipeline flange connection device, including a mobile hydraulic pump truck, a distributor, and multiple hydraulic gripper mechanisms. The mobile hydraulic pump truck includes a mobile trolley, a motor, a control box, and a hydraulic pump station. The hydraulic pump station and control box are respectively mounted on the mobile trolley, and the motor is positioned above the hydraulic pump station, with its output shaft connected to the shaft of the hydraulic pump station via a coupling. The control box is electrically connected to the motor. The distributor has one oil inlet and multiple oil outlets. The oil inlet of the distributor is connected to the oil outlet of the hydraulic pump station, and the oil outlets of the distributor are connected to corresponding hydraulic gripper mechanisms. The hydraulic gripper mechanism includes a hydraulic cylinder, C-shaped grippers, a fixed clamping block, a sliding block, a movable clamping block, and a quick-connect oil pipe joint. This patent application cannot achieve repeated and rapid fixing and releasing of the flange. Utility Model Content

[0004] To overcome the problems existing in the prior art, the purpose of this utility model is to provide a flange quick clamping device and a voltage transformer testing device. The device achieves flange clamping and release through a set of flange quick clamping devices evenly distributed around the flange. Each clamping device is driven by a hydraulic cylinder to move the clamping block, achieving automatic clamping and release of the PT housing flange. The clamping block is mounted on a swingable rod and can slide on the rod. When the swing rod opens, flange docking is possible; when the swing rod closes, flange clamping is achieved. Through the cooperation of the hydraulic cylinder and the elastic element, the sequential actions of swing rod closing, clamping block clamping, clamping block release, and swing rod opening can be realized.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A flange quick clamping device includes: a base plate, one end of which is provided with a rocker arm fixing seat, and the other end of which is provided with a flange mating hole. A hydraulic cylinder fixing seat is installed on the base plate between the flange mating hole and the rocker arm fixing seat; a rocker arm is rotatably connected to the rocker arm fixing seat, and a hydraulic cylinder body is rotatably connected to the hydraulic cylinder fixing seat. The rocker arm includes two swing rods; the two swing rods are connected by a connecting shaft; each swing rod is fitted with an elastic element; a boss is provided on the end of the swing rod near the connecting shaft; a plurality of limiting holes are provided on the top of the swing rod, one of which is fitted with a limiting insert; a pressure block is slidably fitted on each swing rod; a hydraulic cylinder connecting shaft is provided on the end of each pressure block away from the opposite pressure block; the hydraulic cylinder connecting shafts on the two pressure blocks are connected to the hydraulic rod of the hydraulic cylinder.

[0006] Optionally, the hydraulic cylinder mounting base is provided with a connecting hole, and the hydraulic cylinder is provided with a mounting hole. The mounting hole of the hydraulic cylinder is rotatably connected to the connecting hole through a shaft.

[0007] Optionally, a fixing hole is provided on the rocker arm fixing seat, and the rocker arm is rotatably connected to the fixing hole of the rocker arm fixing seat through a connecting shaft.

[0008] Optionally, the two swing rods and the connecting shaft form a U-shape.

[0009] Optionally, the upper end of the elastic element is connected to the lower edge of the clamping block, and the lower end is connected to the boss.

[0010] Optionally, the number of limiting holes is greater than one, and they are arranged along the axial direction of the swing rod at the top of the swing rod.

[0011] Optionally, a connecting plate is connected to the side of the pressure block facing the base plate at the end away from the swing bar, and an elastic block is provided on the side of the connecting plate facing the base.

[0012] Optionally, the end of the hydraulic cylinder body away from the hydraulic cylinder mounting base has a hydraulic rod; a rear side plate and a front side plate are respectively provided on a pair of opposite sides of the base plate parallel to the extension direction of the hydraulic rod.

[0013] Optionally, the hydraulic cylinder connecting shafts on both pressure blocks extend out of the end face of the pressure block, and the extended ends are rotatably connected to bearings, and the two bearings are respectively able to contact the edge of the rear side plate and the edge of the front side plate.

[0014] A voltage transformer testing device includes a voltage transformer, a testing device, and a flange quick-clamping device; the voltage transformer has a PT docking flange, and the testing device has a test docking flange; the base plate of the flange quick-clamping device is fixed to the bottom of the test docking flange through the flange docking hole; the PT docking flange is located on the top of the test docking flange; the bottom of the pressure block is pressed against the top of the PT docking flange.

[0015] Compared with the prior art, the present invention has the following beneficial effects: This invention relates to a quick-clamping flange device. Through the inclined arrangement of the hydraulic cylinder and the swing arm, and the cooperation between the hydraulic cylinder and the elastic element, the device achieves the sequential execution of the swing arm's swing and the clamping and releasing actions of the clamping block. These two actions do not require separate control. This quick-clamping flange device can adapt to flanges of different diameters. Changing the flange diameter can be achieved simply by increasing or decreasing the number of devices.

[0016] The flange quick clamping device of this utility model can be adapted to flanges of different thicknesses by adjusting the position of the limiting insert on the swing rod.

[0017] The guide ramps on the front and rear side plates of the flange quick clamping device of this utility model can guide and position the voltage transformer during installation, making installation convenient. Attached Figure Description

[0018] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of the present invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely schematic to aid in understanding the present invention and do not specifically limit the shapes and proportions of the components. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the flange quick clamping device according to an embodiment of the present utility model; Figure 2 This is a front front view of the flange quick clamping device according to an embodiment of the present utility model; Figure 3 This is a schematic diagram of the internal structure of the flange quick clamping device according to an embodiment of the present utility model; Figure 4 This is a schematic diagram of the docking state of the PT docking flange according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the clamping device rotating into position according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the docking flange of the test device according to an embodiment of the present invention; Figure 7 This is a schematic diagram of a voltage transformer testing device according to an embodiment of the present invention.

[0019] Among them, 1. Base; 11. Base plate; 111. Flange mating hole; 121. Connecting hole; 131. Fixing hole; 12. Hydraulic cylinder fixing seat; 13. Sway arm fixing seat; 14. Rear side plate; 141. Rear first right angle plate edge; 142. Rear second right angle plate edge; 143. Rear inclined plate edge; 15. Front side plate; 151. Front first right angle plate edge; 152. Front second right angle plate edge; 153. Front inclined plate edge; 2. Sway arm; 21. Connecting... 1. Connecting shaft; 22. Boss; 23. Swinging rod; 24. Elastic element; 25. Limiting hole; 26. Limiting insert; 3. Clamping block; 31. Pressure block; 32. Hydraulic cylinder connecting shaft; 33. Connecting plate; 34. Elastic block; 35. Bearing; 4. Hydraulic cylinder; 41. Hydraulic cylinder body; 42. Hydraulic rod; 5. Test docking flange; 6. PT docking flange; 7. Fastener; 8. Test device; 9. Flange quick clamping device; 10. Voltage transformer. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0021] Therefore, the following detailed description of embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0022] In the description of the embodiments of this utility model, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0023] When an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments. The use of the term "horizontal" does not imply that the component is required to be absolutely horizontal, but rather that it may be slightly tilted. "Horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it may be slightly tilted.

[0024] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of this utility model, it should be understood that the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or collections thereof.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0026] The present invention will now be described in detail with reference to the accompanying drawings.

[0027] This utility model discloses a flange quick clamping device, comprising: a base plate 11, one end of which is provided with a rocker arm fixing seat 13, and the other end of which is provided with a flange mating hole 111. A hydraulic cylinder fixing seat 12 mounted on the base plate 11 is provided between the flange mating hole 111 and the rocker arm fixing seat 13; a rocker arm 2 is rotatably connected to the rocker arm fixing seat 13, and a hydraulic cylinder body 41 is rotatably connected to the hydraulic cylinder fixing seat 12. The rocker arm 2 includes two swing rods 23; the two swing rods 23 are connected by a connecting shaft 21. Each swing rod 23 is fitted with an elastic element 24; a boss 22 is provided on the end of the swing rod 23 near the connecting shaft 21; several limiting holes 25 are opened on the top of the swing rod 23, and a limiting insert 26 is installed in one of the limiting holes 25; a pressure block 31 is slidably fitted on each swing rod 23; a hydraulic cylinder connecting shaft 32 is provided on the end of each pressure block 31 away from the opposite pressure block 31; the hydraulic cylinder connecting shafts 32 on the two pressure blocks 31 are connected to the hydraulic rod 42 of the hydraulic cylinder.

[0028] This invention provides a quick-clamping device for flanges of different diameters. Changing the flange diameter can be achieved simply by increasing or decreasing the number of devices.

[0029] The flange quick clamping device of this utility model can be adapted to flanges of different thicknesses by adjusting the position of the limiting insert 26 on the swing rod 2.

[0030] Example 1 like Figure 1 As shown, the present invention provides a flange quick clamping device, comprising: a base 1, a swing rod 2, a clamping block 3, and a hydraulic cylinder 4.

[0031] like Figure 2 and Figure 3 As shown, the base 1 includes a base plate 11.

[0032] The base 1 serves to connect and fix the entire device.

[0033] A flange mating hole 111 is provided on one side of the base plate 11, and a swing rod fixing seat 13 is provided on the other side. The flange mating hole 111 is used to fix the flange quick clamping device 9 to the interface flange of the test device 8.

[0034] Specifically, flange mating hole 111 is an elongated hole.

[0035] A hydraulic cylinder fixing seat 12 is provided on the base plate 11 between the flange mating hole 111 and the rocker arm fixing seat 13.

[0036] The hydraulic cylinder mounting base 12 is provided with a connecting hole 121 for connecting the hydraulic cylinder body 41. The hydraulic cylinder 4 is provided with a mounting hole. The mounting hole of the hydraulic cylinder 4 is connected to the connecting hole 121 through a shaft. The hydraulic cylinder 4 can rotate around the shaft on the connecting hole 121.

[0037] Specifically, the hydraulic cylinder 4 includes a hydraulic cylinder body 41 and a hydraulic rod 42 connected to each other. The mounting hole of the hydraulic cylinder 4 is opened at the bottom of the hydraulic cylinder body 41, and the hydraulic rod 42 is connected to the top of the hydraulic cylinder body 41.

[0038] Optionally, the shaft connected to the connecting hole 121 is a pin.

[0039] Optionally, the rocker arm fixing seat 13, the hydraulic cylinder fixing seat 12, and the base plate 11 are integrally formed and connected.

[0040] The rocker arm fixing seat 13 has a fixing hole 131, and the rocker arm 2 is connected to the rocker arm fixing seat 13 through the fixing hole 131.

[0041] The flange mating hole 111, the hydraulic cylinder fixing seat 12 and the rocker arm fixing seat 13 are arranged in the same straight line direction. The base 1 is provided with a rear side plate 14 and a front side plate 15 at both ends perpendicular to the straight line direction where the flange mating hole 111, the hydraulic cylinder fixing seat 12 and the rocker arm fixing seat 13 are located.

[0042] Both the rear side plate 14 and the front side plate 15 are perpendicular to the base 1.

[0043] The rear side panel 14 and the front side panel 15 have the same shape, both being pentagonal plates.

[0044] like Figure 2 As shown, the front panel 15 includes a set of parallel edges. The ends of the two parallel edges on the same side are connected by the front second right-angle edge 152. The other ends of the two parallel edges are connected by the front first right-angle edge 151 and the front inclined edge 153. The front first right-angle edge 151 is parallel to the front second right-angle edge 152. One end of the front first right-angle edge 151 is connected to one of the parallel edges, and the other end is connected to the front inclined edge 153. The other end of the front inclined edge 153 is connected to the other parallel edge.

[0045] like Figure 3 As shown, the rear panel 14 includes a set of parallel edges. The ends of the two parallel edges on the same side are connected by a second right-angled edge 142. The other ends of the two parallel edges are connected by a first right-angled edge 141 and a rear inclined edge 143. The first right-angled edge 141 is parallel to the second right-angled edge 142. One end of the first right-angled edge 141 is connected to one of the parallel edges, and the other end is connected to the rear inclined edge 143. The other end of the rear inclined edge 143 is connected to the other parallel edge.

[0046] The front right-angle plate edge 151 and the rear right-angle plate edge 141 are pressed against the outer edge of the interface flange of the test device 8 when the fast clamping device 9 is fixed, for positioning.

[0047] The front inclined plate edge 153 and the rear inclined plate edge 143 serve as guides during PT flange docking.

[0048] The front second right-angle plate edge 152 and the rear second right-angle plate edge 142 act as limiters when the clamping block 3 clamps the flange, preventing the swing rod from continuing to rotate.

[0049] The swing arm 2 includes two swing rods 23. The two swing rods 23 are connected by a connecting shaft 21. The two swing rods 23 and the connecting shaft 21 form a U-shaped component.

[0050] The clamping block 3 includes two pressure blocks 31.

[0051] The pressure block 31 has a through hole that penetrates the upper and lower surfaces of the pressure block 31. The pressure block 31 is slidably sleeved on the outside of the swing rod 23, and the pressure block 31 can slide along the swing rod 23.

[0052] Specifically, the through hole on the pressure block 31 matches the shape of the swing rod 23.

[0053] Optionally, the through hole on the pressure block 31 is a round hole.

[0054] Optionally, the swing bar 23 is a round bar.

[0055] The connecting shaft 21 extends from both ends of the two swing rods 23, and the end of the connecting shaft 21 passes through the fixing hole 131 on the swing rod fixing seat 13. The swing rod 2 can rotate around the fixing hole 131 via the connecting shaft 21.

[0056] Each swing rod 23 is fitted with an elastic element 24. Optionally, the elastic element 24 is a spring.

[0057] A boss 22 is provided on the end of the swing rod 23 near the connecting shaft 21 to hold the end of the elastic member 24.

[0058] The upper end of the elastic element 24 is connected to the lower edge of the clamping block 3, and the lower end is connected to the boss 22.

[0059] The elastic element 24 is in a compressed state, providing a thrust to the clamping block 3 along the axial direction of the swing rod 23 toward the direction away from the boss 22.

[0060] The top of the swing rod 23 has several limiting holes 25, and a limiting insert 26 is installed in one of the limiting holes 25.

[0061] Optionally, the limiting insert 26 is an insertion pin.

[0062] Optionally, the number of limiting holes 25 is greater than one, and they are arranged along the axial direction of the swing rod 23 at the top of the swing rod 23. By adjusting the limiting hole 25 into which the limiting insert 26 is inserted, the flange quick clamping device 9 can be adapted to flanges of different thicknesses.

[0063] The clamping block 3 also includes a hydraulic cylinder connecting shaft 32 and a connecting plate 33.

[0064] The end of the pressure block 31 away from the swing rod 23, facing the base plate 11, is connected to the connecting plate 33. The side of the connecting plate 33 facing the base 1 is provided with an elastic block 34. The elastic block 34 is used to ensure that the pressure is applied evenly to the contact surface, avoiding damage to the test PT flange surface.

[0065] Alternatively, the elastic block 34 may be made of rubber.

[0066] The hydraulic cylinder connecting shaft 32 is located in the middle of the pressure block 31 and is perpendicular to the surface of the pressure block 31. The hydraulic cylinder connecting shafts 32 on both pressure blocks 31 are rotatably connected to the hydraulic rod 42.

[0067] The hydraulic cylinder connecting shafts 32 on both pressure blocks 31 extend out of the end face of the pressure block 31 in the direction away from the other pressure block 31, and the extended ends of the hydraulic cylinder connecting shafts 32 on both pressure blocks 31 are rotatably connected to bearings 35.

[0068] The sidewalls of the two bearings 35 intersect the plane of the rear side plate 14 and the plane of the front side plate 15, respectively.

[0069] like Figure 5 As shown, the two bearings 35 can be connected to the front second right-angle plate edge 152 and the rear second right-angle plate edge 142 respectively, to block the rotation of the swing arm 2 toward the front plate 15 and the rear plate 14.

[0070] Example 2 This embodiment of a voltage transformer testing device includes a voltage transformer 10, a testing device 8, and a flange quick clamping device 9.

[0071] like Figure 7 As shown, the bottom outer edge of the voltage transformer 10 has a PT docking flange 6; the top outer edge of the test device 8 has a test docking flange 5.

[0072] like Figure 4 As shown, the flange quick clamping device 9 is fixed to the bottom edge of the test flange 5 by fasteners 7 passing through the flange mating hole 111. Specifically, the fasteners 7 are bolts.

[0073] PT docking flange 6 is positioned on top of test docking flange 5.

[0074] The elastic block 34 at the bottom of the pressure block 31 is pressed against the top of the PT docking flange 6.

[0075] Example 3 Example 2 provides a voltage transformer testing device, which, when used, includes the following steps: Hydraulic cylinder 4 is the power source that drives the flange quick clamping device 9.

[0076] The hydraulic rod 42 of the hydraulic cylinder 4 is extended, pushing the pressure block 31 to rotate the swing arm 2 away from the hydraulic cylinder fixed seat 12, so that the flange quick clamping device 9 opens.

[0077] Connect PT flange 6 to test flange 5.

[0078] like Figure 5 As shown, after the PT docking flange 6 and the test docking flange 5 are docked, the hydraulic cylinder 4 retracts, and the hydraulic rod 42 drives the clamping block 3 to rotate toward the hydraulic cylinder fixed seat 12 via the hydraulic cylinder connecting shaft 32. The clamping block 3 drives the swing rod 2 to rotate. When the swing rod 2 rotates to a position perpendicular to the base plate 11, the bearing 35 collides with the front second right-angle plate edge 152 and the rear second right-angle plate edge 142, and the swing rod 2 stops rotating.

[0079] Among them, PT docking flange 6 is the docking flange of voltage transformer 10 (Potential Transformer, PT).

[0080] like Figure 6 As shown, bearing 35 contacts the front second right-angle plate edge 152 and the rear second right-angle plate edge 142, the rocker arm 2 stops rotating to the left, and hydraulic cylinder 4 continues to retract, driving clamping block 3 to move downward. Elastic element 24 is compressed, and elastic block 34 contacts the upper surface of PT mating flange 6. Hydraulic cylinder 4 continues to retract until the set clamping force is reached.

[0081] After the test is completed, the hydraulic cylinder 4 extends, and the clamping block 3 rises to release pressure until the upper edge of the clamping block 3 touches the limit insert 26. The hydraulic cylinder 4 continues to extend, and the clamping block 3 no longer rises. Instead, it rotates away from the hydraulic cylinder fixed seat 12 with the swing rod 2, and the flange quick clamping device 9 opens.

[0082] When using it, select the number of flange quick clamping devices 9 to be installed according to the size of the voltage transformer 10 and the test docking flange 5 and the required clamping force.

[0083] Optionally, the flange quick clamping device 9 is evenly distributed around the flange.

[0084] Unless otherwise specified, the equipment components involved in the above embodiments are all conventional equipment components, and the structural settings, working methods or control methods involved are all conventional settings, working methods or control methods in the art unless otherwise specified.

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A flange quick clamping device, characterized in that, include: A base plate (11) is provided with a rocker arm fixing seat (13) at one end and a flange mating hole (111) at the other end. A hydraulic cylinder fixing seat (12) is provided between the flange mating hole (111) and the rocker arm fixing seat (13) and mounted on the base plate (11). A rocker arm (2) is rotatably connected to the rocker arm fixing seat (13), and a hydraulic cylinder body (41) is rotatably connected to the hydraulic cylinder fixing seat (12). The rocker arm (2) includes two swing rods (23). The two swing rods (23) are connected by a connecting shaft (21). The swing rods (23) are mounted on... Each is fitted with an elastic element (24); a boss (22) is provided on the end of the swing rod (23) near the connecting shaft (21); several limiting holes (25) are opened on the top of the swing rod (23), and a limiting insert (26) is installed in one of the limiting holes (25); a pressure block (31) is slidably fitted on each swing rod (23); a hydraulic cylinder connecting shaft (32) is provided on the end of each pressure block (31) away from the opposite pressure block (31); the hydraulic cylinder connecting shafts (32) on the two pressure blocks (31) are connected to the hydraulic rod (42) of the hydraulic cylinder.

2. The flange quick clamping device according to claim 1, characterized in that, The hydraulic cylinder mounting base (12) is provided with a connecting hole (121), and the hydraulic cylinder (4) is provided with an installation hole. The installation hole of the hydraulic cylinder (4) is rotatably connected to the connecting hole (121) through a shaft.

3. The flange quick clamping device according to claim 1, characterized in that, The rocker arm fixing seat (13) has a fixing hole (131), and the rocker arm (2) is rotatably connected to the fixing hole (131) of the rocker arm fixing seat (13) through the connecting shaft (21).

4. The flange quick clamping device according to claim 1, characterized in that, Two swing rods (23) and connecting shaft (21) form a U-shaped component.

5. A flange quick clamping device according to claim 1, characterized in that, The upper end of the elastic element (24) is connected to the lower edge of the clamping block (3), and the lower end is connected to the boss (22).

6. A flange quick clamping device according to claim 1, characterized in that, The number of limiting holes (25) is greater than one, and they are arranged along the axial direction of the swing rod (23) at the top of the swing rod (23).

7. A flange quick clamping device according to claim 1, characterized in that, The side of the pressure block (31) facing the bottom plate (11) away from the swing rod (23) is connected to a connecting plate (33), and the side of the connecting plate (33) facing the base (1) is provided with an elastic block (34).

8. A flange quick clamping device according to claim 1, characterized in that, The end of the hydraulic cylinder body (41) away from the hydraulic cylinder mounting base (12) has a hydraulic rod (42); a set of rear side plates (14) and front side plates (15) are respectively provided on the base plate (11) parallel to the extension direction of the hydraulic rod (42).

9. A flange quick clamping device according to claim 8, characterized in that, The hydraulic cylinder connecting shafts (32) on the two pressure blocks (31) both extend out of the end face of the pressure block (31), and the extended ends are rotatably connected to bearings (35). The two bearings (35) can respectively contact the edge of the rear side plate (14) and the edge of the front side plate (15).

10. A voltage transformer testing device, characterized in that, The device includes a voltage transformer (10), a test apparatus (8), and a flange quick clamping device (9) as described in any one of claims 1 to 9; the voltage transformer (10) has a PT docking flange (6), and the test apparatus (8) has a test docking flange (5); the base plate (11) of the flange quick clamping device (9) is fixed to the bottom of the test docking flange (5) through the flange docking hole (111); the PT docking flange (6) is disposed on the top of the test docking flange (5); the bottom of the pressure block (31) is pressed against the top of the PT docking flange (6).

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