Brushless exciter load test device

Abstract

The utility model discloses a brushless exciter load test device, which comprises a mounting bottom plate, a load test box and an exciter body, a clamping plate is fixedly arranged on the lower surface of the exciter body, a clamping groove corresponding to the clamping plate is formed in the upper surface of the mounting bottom plate, and a rotating shaft is arranged on one side, close to the load test box, of the exciter body; a moving assembly for driving the load test box to move is arranged on the upper surface of the mounting bottom plate; the moving assembly comprises a moving block, a sleeving ring is fixedly arranged on the upper surface of the moving block, and a bearing corresponding to the rotating shaft is rotationally arranged in the sleeving ring; the upper surface of the mounting bottom plate is provided with an abutting assembly used for abutting against the clamping plate. The servo motor is started to drive the screw rod to rotate, and the extension block drives the load test box and the sleeving ring to move towards the rotating shaft through the moving block, thereby driving the bearing to move towards the rotating shaft, enabling the test device to be suitable for exciter bodies with different rotating shaft lengths, and improving the applicability of the load test device.

Description

Technical Field

[0001] The utility model relates to the technical field of load tests of exciters, in particular to a brushless exciter load test device. Background Technique

[0002] Brushless excitation is an excitation system that does not require slip rings and carbon brushes. Medium and small three-phase synchronous generators are mainly divided into two categories: brushless excitation systems and brush excitation systems. In a brushless excitation system, the excitation winding of an AC exciter is excited by a voltage regulator, and the alternating current generated by the armature winding of the exciter is rectified by a rotating rectifier and then supplied to the field winding of the main generator for excitation. According to national standards, each brushless exciter must undergo a load condition test in a rotating state before leaving the factory. Existing brushless exciter load test devices can only be applied to exciters with the same shaft length, resulting in a reduced applicability of the test device;

[0003] After retrieval, in the prior art, the authorized announcement number CN202548294U discloses a hanging armature type brushless exciter load test device, including a collector ring shaft, collector rings, flexible connecting copper bars, a balance shaft, support bearings, a carbon brush holder, a stabilizing bearing, and a base. The stabilizing bearing, support bearing, and carbon brush holder are installed on the base; one end of the collector ring shaft is installed on the stabilizing bearing and is connected to a driving motor through a coupling; the other end is bolted to the balance shaft installed on the support bearing, and the circuit between the collector ring shaft and the balance shaft is connected through a flexible connecting copper bar. Two collector rings, a positive electrode and a negative electrode, are installed on the collector ring shaft, and a carbon brush holder is provided on the periphery of each collector ring. The utility model adopts a unique overall structure combining a balance shaft supported by double bearings and a collector ring shaft with a stabilizing bearing, and can complete the load test of a hanging armature type brushless exciter without a support bearing;

[0004] The above patent has the problem that it can only be applied to brushless exciters with the same shaft length during use, resulting in a reduced applicability of the test device; therefore, we need to propose a brushless exciter load test device. Content of the Utility Model

[0005] The purpose of the utility model is to provide a brushless exciter load test device, which drives a load test box and a bearing to move towards the shaft through a moving component, so that shafts of different lengths are clamped into the bearing, so as to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A brushless exciter load test device, including a mounting base plate, a load test box, and an exciter body. A clamping plate is fixedly arranged on the lower surface of the exciter body, a clamping groove corresponding to the clamping plate is opened on the upper surface of the mounting base plate, and a shaft is arranged on one side of the exciter body close to the load test box;

[0007] On the upper surface of the installation base plate, there is a moving component for driving the load test box to move;

[0008] The moving component includes a moving block. On the upper surface of the moving block, a socket ring is fixedly arranged. Inside the socket ring, a bearing corresponding to the rotating shaft is rotatably arranged;

[0009] On the upper surface of the installation base plate, there is a pressing component for pressing against the clamping plate.

[0010] Preferably, the moving component further includes an installation frame, a lead screw, and a servo motor. The lead screw is rotatably arranged inside the installation frame. The servo motor is key-connected to one end of the installation frame away from the clamping plate. The lead screw is key-connected to the output end of the servo motor, and the moving block is threadedly sleeved on the outer arc surface of the lead screw.

[0011] Preferably, the moving block is arranged as a convex block, and the moving block is slidably arranged inside the installation frame. The load test box is fixedly installed on the upper surface of the installation frame, and the bearing is located between the load test box and the exciter body.

[0012] Preferably, the pressing component includes an extension block, a rotating column, a main pressing column, and two groups of auxiliary modules. The extension block is fixedly installed on the upper surface of the installation base plate. The rotating column rotatably penetrates through the extension block. The main pressing column is fixedly arranged at one end of the rotating column close to the clamping plate.

[0013] Preferably, both groups of the auxiliary modules include an auxiliary rod, a secondary pressing column, and a clamping convex block. The two groups of auxiliary rods are rotatably sleeved on the outer arc surface of the rotating column. The secondary pressing column is fixedly installed on one side of the auxiliary rod close to the clamping plate. The clamping convex block is fixedly installed on the lower surface of the auxiliary rod, and a moving groove corresponding to the clamping convex block is opened inside the clamping groove.

[0014] Preferably, at one end of the load test box close to the exciter body, there is a test rotating shaft, and the bearing is sleeved on the outer arc surfaces of the rotating shaft and the test rotating shaft.

[0015] Preferably, a clamping ring is fixedly arranged inside the socket ring, and a rotating groove corresponding to the clamping ring is opened on the outer arc surface of the bearing.

[0016] Compared with the prior art, the beneficial effects of the present utility model are:

[0017] By starting the servo motor to drive the lead screw to rotate, the extension block drives the load test box and the socket ring to move towards the rotating shaft through the moving block, thereby driving the bearing to move towards the rotating shaft, and further enabling the test device to be applicable to the exciter body with different rotating shaft lengths, thus improving the applicability of the load test device.

[0018] Other features and advantages of the present utility model will be described in the subsequent specification, and in part, will be obvious from the specification, or will be understood by implementing the present invention. The objectives and other advantages of the present utility model can be achieved and obtained through the structure pointed out in the specification and the accompanying drawings. Description of the Drawings

[0019] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0020] Figure 2 It is an exploded view of the overall structure of the present utility model;

[0021] Figure 3 It is an exploded view of the clamping component of the present utility model;

[0022] Figure 4 For the present utility model Figure 2 The enlarged view of the structure at position A in it.

[0023] In the figure: 1, mounting base plate; 2, clamping plate; 3, mounting frame; 4, lead screw; 5, servo motor; 6, moving block; 7, load test box; 8, rotating shaft; 9, exciter body; 10, extension block; 11, rotating column; 12, clamping groove; 13, main clamping column; 14, auxiliary rod; 15, secondary clamping column; 16, moving groove; 18, clamping convex block; 19, bearing; 20, rotating groove; 21, test rotating shaft; 22, clamping ring; 23, socket ring. Detailed Embodiment

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] The present utility model provides: A brushless exciter load test device, as Figures 1-4 shown, includes a mounting base plate 1, a load test box 7, and an exciter body 9. A clamping plate 2 is fixedly arranged on the lower surface of the exciter body 9, a clamping groove 12 corresponding to the clamping plate 2 is opened on the upper surface of the mounting base plate 1, and a rotating shaft 8 is arranged on one side of the exciter body 9 close to the load test box 7;

[0026] A moving component for driving the load test box 7 to move is arranged on the upper surface of the mounting base plate 1;

[0027] The moving component includes a moving block 6. A socket ring 23 is fixedly arranged on the upper surface of the moving block 6, and a bearing 19 corresponding to the rotating shaft 8 is rotatably arranged inside the socket ring 23;

[0028] A tightening component for pressing against the clamping plate 2 is provided on the upper surface of the mounting base plate 1;

[0029] The moving block 6 is driven to move by the moving component, so as to drive the load test box 7 and the bearing 19 close to the rotating shaft 8, and further make the test device applicable to the exciter body 9 with different lengths of the rotating shaft 8, thereby improving the applicability of the load test device.

[0030] Preferably, the moving component further includes a mounting frame 3, a lead screw 4 and a servo motor 5. The lead screw 4 is rotatably arranged inside the mounting frame 3. The servo motor 5 is key-connected to one end of the mounting frame 3 away from the clamping plate 2. The lead screw 4 is key-connected to the output end of the servo motor 5. And the moving block 6 is threadedly sleeved on the outer arc surface of the lead screw 4. By starting the servo motor 5 to drive the lead screw 4 to rotate, the lead screw 4 drives the moving block 6 to move inside the mounting frame 3 through the thread, and by arranging the mounting frame 3 to support the lead screw 4 and the moving block 6, the stability of the moving block 6 during the moving process is ensured.

[0031] Further, the moving block 6 is set as a convex block, and the moving block 6 is slidably arranged inside the mounting frame 3. The load test box 7 is fixedly installed on the upper surface of the mounting frame 3, and the bearing 19 is located between the load test box 7 and the exciter body 9. The moving block 6 is set as a convex block, so as to ensure that the moving block 6 will not rotate along with the lead screw 4 during the process of following the lead screw 4 to move, and the moving block 6 will drive the load test box 7 and the bearing 19 close to the exciter body 9 when moving, and further make the test device applicable to the exciter body 9 with different lengths of the rotating shaft 8.

[0032] Furthermore, the tightening component includes an extension block 10, a rotating column 11, a main tightening column 13 and two groups of auxiliary modules. The extension block 10 is fixedly installed on the upper surface of the mounting base plate 1. The rotating column 11 rotatably penetrates through the extension block 10. The main tightening column 13 is fixedly arranged at one end of the rotating column 11 close to the clamping plate 2. The extension block 10 supports the rotating column 11, and the rotating column 11 is threadedly connected to the extension block 10. The rotation of the rotating column 11 drives the main tightening column 13 to move, so as to press against the clamping plate 2 through the main tightening column 13. The height of the clamping plate 2 is adjusted according to the height of the exciter body 9, so as to ensure that the rotating shaft 8 can be inserted into the bearing 19, so that the whole is applicable to different exciter bodies 9.

[0033] It should be noted that both groups of auxiliary modules include auxiliary rods 14, secondary abutting columns 15 and clamping bumps 18. The two groups of auxiliary rods 14 are rotatably sleeved on the outer arc surface of the rotating column 11. The secondary abutting columns 15 are fixedly installed on the side of the auxiliary rod 14 close to the clamping plate 2. The clamping bumps 18 are fixedly installed on the lower surface of the auxiliary rod 14. A moving groove 16 corresponding to the clamping bump 18 is formed inside the clamping groove 12. The auxiliary rod 14 is rotatably sleeved on the outer arc surface of the main abutting column 13. When the main abutting column 13 rotates, the auxiliary rod 14 will not rotate with the main abutting column 13, but will move back and forth with the main abutting column 13, thereby driving the two groups of secondary abutting columns 15 to approach the exciter body 9 synchronously with the main abutting column 13. The clamping bump 18 is set to be inserted into the moving groove 16, and the auxiliary rod 14 is supported, so as to ensure that the main abutting column 13 and the secondary abutting column 15 can approach the clamping plate 2 horizontally.

[0034] Specifically, a test rotating shaft 21 is provided at one end of the load test box 7 close to the exciter body 9. The bearing 19 is sleeved on the outer arc surfaces of the rotating shaft 8 and the test rotating shaft 21. The rotating shaft 8 drives the bearing 19 to rotate, and the bearing 19 drives the test rotating shaft 21 to conduct a load test.

[0035] In addition, a clamping ring 22 is fixedly arranged inside the socket ring 23, and a rotating groove 20 corresponding to the clamping ring 22 is formed on the outer arc surface of the bearing 19. By setting the clamping ring 22 to be inserted into the rotating groove 20, while ensuring that the socket ring 23 is fixed on the upper surface of the moving block 6, the bearing 19 can rotate inside the socket ring 23.

[0036] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A brushless exciter load test device, characterized in that, Including: a mounting base plate (1), a load test box (7), and an exciter body (9). A clamping plate (2) is fixedly arranged on the lower surface of the exciter body (9). A clamping groove (12) corresponding to the clamping plate (2) is opened on the upper surface of the mounting base plate (1). A rotating shaft (8) is arranged on one side of the exciter body (9) close to the load test box (7). A moving component for driving the load test box (7) to move is arranged on the upper surface of the mounting base plate (1). The moving component includes a moving block (6). A socket ring (23) is fixedly arranged on the upper surface of the moving block (6). A bearing (19) corresponding to the rotating shaft (8) is rotatably arranged inside the socket ring (23). A pressing component for pressing the clamping plate (2) is arranged on the upper surface of the mounting base plate (1).

2. The brushless exciter load test device according to claim 1, characterized in that: The moving component further includes a mounting frame (3), a lead screw (4), and a servo motor (5). The lead screw (4) is rotatably arranged inside the mounting frame (3). The servo motor (5) is key-connected to one end of the mounting frame (3) away from the clamping plate (2). The lead screw (4) is key-connected to the output end of the servo motor (5), and the moving block (6) is threadedly sleeved on the outer arc surface of the lead screw (4).

3. The brushless exciter load test device according to claim 2, characterized in that: The moving block (6) is arranged as a convex block, and the moving block (6) is slidably arranged inside the mounting frame (3). The load test box (7) is fixedly installed on the upper surface of the mounting frame (3), and the bearing (19) is located between the load test box (7) and the exciter body (9).

4. A brushless exciter load test device according to claim 1, characterized in that: The pressing component includes an extension block (10), a rotating column (11), a main pressing column (13), and two groups of auxiliary modules. The extension block (10) is fixedly installed on the upper surface of the mounting base plate (1). The rotating column (11) rotatably penetrates through the extension block (10). The main pressing column (13) is fixedly arranged at one end of the rotating column (11) close to the clamping plate (2).

5. The brushless exciter load test device according to claim 4, characterized in that: Both groups of the auxiliary modules include an auxiliary rod (14), a secondary pressing column (15), and a clamping convex block (18). Both groups of the auxiliary rods (14) are rotatably sleeved on the outer arc surface of the rotating column (11). The secondary pressing column (15) is fixedly installed on one side of the auxiliary rod (14) close to the clamping plate (2). The clamping convex block (18) is fixedly installed on the lower surface of the auxiliary rod (14), and a moving groove (16) corresponding to the clamping convex block (18) is opened inside the clamping groove (12).

6. The brushless exciter load test device according to claim 3, characterized in that: A test rotating shaft (21) is arranged at one end of the load test box (7) close to the exciter body (9). The bearing (19) is sleeved on the outer arc surfaces of the rotating shaft (8) and the test rotating shaft (21).

7. The brushless exciter load test device according to claim 6, characterized in that: A clamping ring (22) is fixedly arranged inside the socket ring (23), and a rotating groove (20) corresponding to the clamping ring (22) is opened on the outer arc surface of the bearing (19).

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