Variable frequency stator testing all-in-one machine

Abstract

The utility model relates to stator test technical field, concretely is a kind of frequency conversion stator test integrated machine, including rack, the surface of rack is equipped with key board, the surface of the top position of key board is equipped with controller, the inside of rack is equipped with bakelite board by screw, the inner wall of rack is equipped with support plate, the surface of support plate is provided with vacuum test subassembly, the surface of bottom sealing cover and bakelite board is provided with sealing assembly mechanism, the surface of bakelite board is provided with adjusting limiting mechanism.The utility model not only makes integrated machine when using can be assembled in the inside of rack with bottom sealing cover stablely, simultaneously, can greatly improve the sealing property when integrated machine is used, and make integrated machine when using can be clamped in the surface of bakelite board with the stator to be tested stablely, make integrated machine when testing test result more accurate.

Description

Technical Field

[0001] This utility model relates to the field of stator testing technology, specifically to an integrated frequency converter stator testing machine. Background Technology

[0002] The stator is the stationary part of the motor. It consists of three parts: the stator core, the stator windings, and the frame. The main function of the stator is to generate a rotating magnetic field. The stator core is an important component of the motor's magnetic circuit. During the manufacturing process of the stator core, due to factors such as punch wear, the processed stator core slots may be too small or have slot shape deviations. Therefore, it is necessary to inspect the stator core to ensure the quality of motor stator production. A variable frequency stator testing integrated machine is needed.

[0003] The existing integrated testing machine has a relatively cumbersome testing process. Furthermore, if the testing strip is not aligned with the corresponding stator core slot, it can easily damage the stator. The existing integrated testing machine is also inconvenient to assemble, and its sealing performance during assembly is insufficient. This makes it difficult to stably assemble the bottom sealing cover inside the frame during use, thus reducing the machine's overall sealing performance. In addition, the existing integrated testing machine's stator clamping effect is not good enough, preventing the stator to be tested from being stably clamped onto the bakelite board surface, resulting in inaccurate test results. Utility Model Content

[0004] The purpose of this utility model is to provide an integrated tester for frequency converter stators, so as to solve the problems mentioned in the background art, such as the inconvenience of assembly, insufficient sealing during assembly, and poor limiting and clamping effect on the stator.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a variable frequency stator testing integrated machine, including a frame, a keypad mounted on the surface of the frame, a controller mounted on the top surface of the keypad, a bakelite board mounted inside the frame by screws, support plates mounted on the inner walls of the frame, a vacuum testing component mounted on the surface of the support plates, a vacuum cover mounted on the bottom of the vacuum testing component by screws, the vacuum cover extending into the interior of the bakelite board and contacting the inner wall of the bakelite board, a bottom sealing cover mounted on the surface of the bakelite board by screws, a sealing assembly mechanism provided between the bottom sealing cover and the surface of the bakelite board, and an adjustment limiting mechanism provided on the surface of the bakelite board.

[0006] Preferably, the bottom end of the bottom sealing cover extends into the interior of the frame. A bracket is mounted on the surface of the bottom of the bakelite board by screws. A cylinder is mounted on the surface of the bracket by screws. The input end of the cylinder is electrically connected to the output end of the controller. A lifting connecting block is mounted on the output end of the cylinder. A bearing seat is mounted on the surface of the top of the lifting connecting block by screws. A bearing cover is mounted on the surface of the bottom of the bearing seat by screws. A test rotor is provided on the surface of the bearing seat. The test rotor and the surface of the lifting connecting block are rotatably engaged by bearings. A main shaft is installed inside the test rotor. The bottom end of the main shaft passes through the bearing seat and the bearing cover and extends below the bearing cover. A ball bearing is installed on the inner wall of the bearing seat. The ball bearing and the surface of the main shaft are rotatably engaged. The main shaft is rotatably engaged with the inner walls of the bearing seat and the bearing cover respectively. A rotating frame is mounted on the surface of the lower washer. A lower washer is installed on the surface of the part. Casters with adjustment blocks are installed on the surface of the bottom corner of the frame. A test panel is installed on the surface of the frame. A vacuum tube connector is installed on the surface of the bakelite board with screws. The bottom end of the vacuum tube connector passes through the bakelite board and extends into the interior of the frame. An adjustable plate is provided inside the frame. The adjustable plate is fastened to the inner wall of the frame with screws. A stator pad is installed on the surface of the top of the bakelite board with screws. A positioning base is installed on the surface of the top of the stator pad. A terminal socket assembly is installed on the surface of the top of the bakelite board. A plate body is installed on the surface of the top of the bakelite board. Linear guide rails are installed on the surface of the plate body. An air inlet connector is installed on the surface of the top of the bakelite board with screws. Spring fixing blocks are installed on the surface of the plate body with screws. Tension springs are installed on the surface of the spring fixing blocks.

[0007] Preferably, the sealing assembly mechanism consists of mounting studs, a first O-ring, a second O-ring, and a sealing groove. The surface of the bakelite board is threaded with mounting studs, and one end of the mounting stud passes through the bakelite board and the frame in sequence and is threadedly fastened to the surface of the bottom sealing cover.

[0008] Preferably, the inner wall of the bottom sealing cover is provided with a sealing groove, and a second O-ring is installed inside the sealing groove. The surface of the second O-ring is in contact with the surface at the bottom of the frame. A first O-ring is installed on the surface at the bottom of the bakelite board, and the surface of the first O-ring is in contact with the surface of the frame.

[0009] Preferably, the adjusting limit mechanism consists of a fastening nut, an adjusting screw, a ball nut, a screw support seat, a V-shaped connecting plate, and a V-shaped block. The screw support seat is installed on the surface of the top position of the bakelite board, and the adjusting screw is provided above the bakelite board. The surface of the adjusting screw is threadedly connected to the fastening nut, and the surfaces of the adjusting screw and the screw support seat rotate in mutual engagement.

[0010] Preferably, the surface of the adjusting screw is threaded with a ball nut, the ball nut and the surface of the screw support are in sliding engagement, a V-shaped connecting plate is installed on the surface of the top position of the ball nut, and a V-shaped block is installed on the surface of the V-shaped connecting plate by screws.

[0011] Compared with the prior art, the beneficial effects of this utility model are: the integrated frequency converter stator tester not only enables the bottom sealing cover to be stably assembled inside the frame during use, but also greatly improves the sealing performance during use. Furthermore, it enables the stator to be tested to be stably clamped on the surface of the bakelite board, making the test results more accurate during testing. With a sealing assembly mechanism, the first O-ring moves into the frame, and the user places the bottom sealing cover inside the frame, so that the second O-ring on the sealing groove surface fits against the inner wall of the frame. The user tightens the mounting studs on the bakelite board surface, and the bottom sealing cover is installed in the designated position inside the frame under the action of the mounting studs. The combined action of the first and second O-rings can greatly improve the sealing performance during stator testing, realizing the function of sealing assembly of the integrated machine. This allows the bottom sealing cover to be stably assembled inside the frame when the integrated machine is in use, and at the same time, it can greatly improve the sealing performance when the integrated machine is in use. With an adjustable limiting mechanism, after the stator to be tested is placed at the designated position on the bakelite board surface, the user rotates the adjusting screw. Under the threaded engagement of the adjusting screw and the ball nut, the ball nut moves on the surface of the adjusting screw. At this time, the ball nut slides on the surface of the screw support. When the ball nut moves, it drives the V-shaped connecting plate and V-shaped block to the designated position. The user then tightens the fastening nut to fix the position of the V-shaped connecting plate and V-shaped block. Under the combined action of the V-shaped connecting plate and V-shaped block, the position of the stator is limited, realizing the function of limiting and clamping the stator with the integrated machine. This allows the integrated machine to stably clamp the stator to be tested on the surface of the bakelite board, making the test results more accurate. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2This is a schematic diagram of the front cross-sectional structure of this utility model; Figure 3 This is an enlarged side view sectional diagram of the present invention; Figure 4 This is a top view enlarged cross-sectional schematic diagram of the bakelite board of this utility model; Figure 5 For the present utility model Figure 2 Enlarged structural diagram of the central sealing assembly mechanism; Figure 6 For the present utility model Figure 3 A magnified schematic diagram of the adjustable limit mechanism.

[0013] In the diagram: 1. Frame; 101. Controller; 102. Keypad; 103. Bakelite board; 104. Vacuum chamber; 105. Casters with adjusting blocks; 106. Bottom sealing cover; 107. Vacuum test assembly; 108. Support plate; 109. Test panel; 110. Vacuum tube connector; 111. Adjusting plate; 112. Bracket; 113. Tension spring; 114. Plate body; 115. Linear guide rail; 116. Air inlet connector; 117. Spring fixing block; 118. Positioning base; 119. Stator pad; 120. Terminal 1. Socket assembly; 121. Lifting connecting block; 122. Bearing cover; 123. Ball bearing; 124. Main shaft; 125. Test rotor; 126. Rotating frame; 127. Lower washer; 128. Cylinder; 129. Bearing seat; 2. Sealing assembly mechanism; 21. Mounting stud; 22. First O-ring seal; 23. Second O-ring seal; 24. Sealing groove; 3. Adjustment limit mechanism; 31. Fastening nut; 32. Adjusting screw; 33. Ball nut; 34. Screw support seat; 35. V-connecting plate; 36. V-block. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. In addition, the terms "first", "second", "third", "upper", "lower", "left", "right", etc. are used for descriptive purposes only and should not be construed as indicating or implying relative importance. At the same time, in the description of the present utility model, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0015] The structure of the frequency converter stator testing integrated machine provided by this utility model is as follows: Figures 1 to 4As shown, the device includes a frame 1. A keypad 102 is mounted on the surface of the frame 1. A controller 101 (e.g., LA series) is mounted on the top of the keypad 102. A bakelite board 103 is mounted inside the frame 1 by screws. Support plates 108 are mounted on the inner walls of the frame 1. A vacuum testing assembly 107 is mounted on the surface of the support plates 108. A vacuum cover 104 is mounted on the bottom of the vacuum testing assembly 107 by screws. The vacuum cover 104 extends into the interior of the bakelite board 103 and contacts the inner wall of the bakelite board 103. A bottom sealing cover 106 is mounted on the surface of the bakelite board 103 by screws. The bottom end of the bottom sealing cover 106 extends into the interior of the frame 1. A bracket 112 is mounted on the surface of the mounting point using screws. A cylinder 128, which can be a DNC series cylinder, is mounted on the surface of the bracket 112 using screws. The input end of the cylinder 128 is electrically connected to the output end of the controller 101. A lifting connecting block 121 is mounted on the output end of the cylinder 128. A bearing housing 129 is mounted on the top surface of the lifting connecting block 121 using screws. A bearing cover 122 is mounted on the bottom surface of the bearing housing 129 using screws. A test rotor 125 is mounted on the surface of the bearing housing 129. The test rotor 125 and the surface of the lifting connecting block 121 are rotated and engaged with each other via bearings. A spindle 124 is installed inside the test rotor 125, and the bottom end of the spindle 124 passes through the bearing housing. 129 extends below the bearing cover 122 and is connected to the bearing housing 129. A ball bearing 123 is installed on the inner wall of the bearing housing 129. The ball bearing 123 rotates with the surface of the main shaft 124. The main shaft 124 rotates with the inner walls of both the bearing housing 129 and the bearing cover 122. A rotating frame 126 is installed on the surface of the lower washer 127. A lower washer 127 is installed on the surface at the bottom of the rotating frame 126. Casters 105 with adjusting blocks are installed on the surfaces at the bottom corners of the frame 1. A test panel 109 is installed on the surface of the frame 1. A vacuum tube connector 110 is installed on the surface of the bakelite board 103 by screws. The bottom end of the vacuum tube connector 110 penetrates the bakelite board 103 and extends into the interior of the frame 1. The internal part is equipped with an adjustable adjustment plate 111, which is fastened to the inner wall of the frame 1 by screws. A stator pad 119 is installed on the top surface of the bakelite board 103 by screws. A positioning base 118 is installed on the top surface of the stator pad 119. A terminal socket assembly 120 is installed on the top surface of the bakelite board 103. A plate body 114 is installed on the top surface of the bakelite board 103. Linear guide rails 115 are installed on the surface of the plate body 114. An air inlet connector 116 is installed on the top surface of the bakelite board 103 by screws. A spring fixing block 117 is installed on the surface of the plate body 114 by screws. A tension spring 113 is installed on the surface of the spring fixing block 117.

[0016] Furthermore, such as Figure 2 and Figure 5 As shown, a sealing assembly mechanism 2 is provided on the surface of the bottom sealing cover 106 and the bakelite board 103. The sealing assembly mechanism 2 consists of a mounting stud 21, a first O-ring 22, a second O-ring 23, and a sealing groove 24. The surface of the bakelite board 103 is threaded with mounting studs 21. One end of the mounting stud 21 passes through the bakelite board 103 and the frame 1 in sequence and is threadedly fastened to the surface of the bottom sealing cover 106. A sealing groove 24 is provided on the inner wall of the bottom sealing cover 106. The second O-ring 23 is installed inside the sealing groove 24. The surface of the second O-ring 23 is in contact with the surface of the bottom position of the frame 1. The surface of the bottom position of the bakelite board 103 is installed with the first O-ring 22. The surface of the first O-ring 22 is in contact with the surface of the frame 1.

[0017] During implementation, the first O-ring 22 moves into the interior of the frame 1, and the user then places the bottom sealing cover 106 inside the frame 1, so that the second O-ring 23 on the surface of the sealing groove 24 fits against the inner wall of the frame 1. The user then tightens the mounting studs 21 on the surface of the bakelite board 103. Under the action of the mounting studs 21, the bottom sealing cover 106 is installed in the designated position inside the frame 1. The combined action of the first O-ring 22 and the second O-ring 23 can greatly improve the sealing performance during stator testing, thereby realizing the function of integrated machine sealing assembly.

[0018] Furthermore, such as Figure 3 and Figure 6 As shown, the surface of the bakelite board 103 is provided with an adjustment limiting mechanism 3. The adjustment limiting mechanism 3 consists of a fastening nut 31, an adjusting screw 32, a ball nut 33, a screw support 34, a V-shaped connecting plate 35, and a V-block 36. The screw support 34 is installed on the surface of the top position of the bakelite board 103. The adjusting screw 32 is provided above the bakelite board 103. The surface of the adjusting screw 32 is threadedly connected to the fastening nut 31. The adjusting screw 32 and the surface of the screw support 34 rotate relative to each other. The surface of the adjusting screw 32 is threadedly fitted with the ball nut 33. The ball nut 33 and the surface of the screw support 34 slide relative to each other. The surface of the ball nut 33 is installed at the top position of the surface. The surface of the V-shaped connecting plate 35 is installed with a V-block 36 by screws.

[0019] During implementation, after the stator to be tested is placed at the designated position on the surface of the bakelite board 103, the user rotates the adjusting screw 32. Under the threaded engagement of the adjusting screw 32 and the ball nut 33, the ball nut 33 moves on the surface of the adjusting screw 32. At this time, the ball nut 33 slides on the surface of the screw support 34. When the ball nut 33 moves, it drives the V-shaped connecting plate 35 and the V-shaped block 36 to the designated position. The user then tightens the fastening nut 31 to fix the position of the V-shaped connecting plate 35 and the V-shaped block 36. Under the combined action of the V-shaped connecting plate 35 and the V-shaped block 36, the position of the stator is limited, so as to realize the function of the integrated machine for limiting and clamping the stator.

[0020] Working principle: In use, first place the frame 1 in the designated position. When the user installs the bakelite board 103 in the designated position on the surface of the frame 1, the first O-ring 22 moves into the inside of the frame 1. Then, the user places the bottom sealing cover 106 inside the frame 1, so that the second O-ring 23 on the surface of the sealing groove 24 fits against the inner wall of the frame 1. The user tightens the mounting studs 21 on the surface of the bakelite board 103. Under the action of the mounting studs 21, the bottom sealing cover 106 is installed in the designated position inside the frame 1. The combined action of the first O-ring 22 and the second O-ring 23 can greatly improve the sealing performance during stator testing, so as to realize the function of sealing assembly of the integrated machine. Thus, when the integrated machine is used, the bottom sealing cover 106 can be stably assembled inside the frame 1, and at the same time, the sealing performance of the integrated machine during use can be greatly improved.

[0021] Subsequently, the user places the stator to be tested on the surface of the positioning base 118 on the surface of the bakelite board 103. Under the combined action of the board 114 and the linear guide rail 115, the position of the stator is adjusted. The air inlet is connected to the air inlet connector 116, and the terminals are plugged into the terminal socket assembly 120. Then, the vacuum pump and solenoid valve inside the frame 1 are connected, and the vacuum tube is connected to the vacuum tube connector 110. The support plate 108 drives the vacuum cover 104 to move downward, so that the bottom end of the vacuum cover 104 moves to contact the surface of the bakelite board 103. Under the action of the vacuum pump and vacuum tube, a vacuum environment is generated inside the vacuum cover 104. During the testing of the stator, the spindle 124 drives the test rotor 125 to rotate on the surface of the bearing seat 129. Under the action of the ball bearing 123, the spindle 124 rotates inside the bearing seat 129, thereby driving the rotating frame 126 to rotate, and the resistance value, inter-turn, AC withstand voltage, speed and power of the stator are tested.

[0022] Subsequently, after the stator to be tested is placed at the designated position on the surface of the bakelite board 103, the user rotates the adjusting screw 32. Under the threaded engagement of the adjusting screw 32 and the ball nut 33, the ball nut 33 moves on the surface of the adjusting screw 32. At this time, the ball nut 33 slides on the surface of the screw support 34. When the ball nut 33 moves, it drives the V-shaped connecting plate 35 and the V-shaped block 36 to the designated position. The user then tightens the fastening nut 31 to fix the position of the V-shaped connecting plate 35 and the V-shaped block 36. Under the combined action of the V-shaped connecting plate 35 and the V-shaped block 36, the position of the stator is limited, so as to realize the function of the integrated machine for limiting and clamping the stator. This allows the integrated machine to stably clamp the stator to be tested on the surface of the bakelite board 103 during use, making the test results more accurate during testing, and finally completing the use of the integrated machine.

[0023] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A variable frequency stator testing integrated machine, comprising a frame (1), characterized in that: A keypad (102) is mounted on the surface of the frame (1). A controller (101) is mounted on the top of the keypad (102). A bakelite board (103) is mounted inside the frame (1) by screws. A support plate (108) is mounted on the inner wall of the frame (1). A vacuum test assembly (107) is provided on the surface of the support plate (108). A vacuum cover (104) is mounted on the bottom of the vacuum test assembly (107) by screws. The vacuum cover (104) extends into the interior of the bakelite board (103) and contacts the inner wall of the bakelite board (103). A bottom sealing cover (106) is mounted on the surface of the bakelite board (103) by screws. A sealing assembly mechanism (2) is provided between the bottom sealing cover (106) and the surface of the bakelite board (103). An adjustment limit mechanism (3) is provided on the surface of the bakelite board (103).

2. The variable frequency stator testing integrated machine according to claim 1, characterized in that: The bottom sealing cover (106) extends into the interior of the frame (1). A bracket (112) is screwed onto the bottom surface of the bakelite board (103). A cylinder (128) is screwed onto the surface of the bracket (112). The input end of the cylinder (128) is electrically connected to the output end of the controller (101). A lifting connecting block (121) is installed at the output end of the cylinder (128). A bearing seat (129) is screwed onto the top surface of the lifting connecting block (121). A bearing cover (122) is screwed onto the bottom surface of the bearing seat (129). The surface of the bearing seat (129) is provided with... A test rotor (125) is provided, and the surfaces of the test rotor (125) and the lifting connecting block (121) are rotated together by bearings. A main shaft (124) is installed inside the test rotor (125). The bottom end of the main shaft (124) passes through the bearing seat (129) and the bearing cover (122) and extends to the bottom of the bearing cover (122). A ball bearing (123) is installed on the inner wall of the bearing seat (129). The ball bearing (123) is rotated together with the surface of the main shaft (124). The main shaft (124) is rotated together with the inner walls of the bearing seat (129) and the bearing cover (122) respectively. A rotating frame (12) is installed on the surface of the lower washer (127). 6) A lower washer (127) is installed on the surface at the bottom of the rotating frame (126). Casters (105) with adjusting blocks are installed on the surface at the bottom corner of the frame (1). A test panel (109) is installed on the surface of the frame (1). A vacuum tube connector (110) is installed on the surface of the bakelite board (103) by screws. The bottom end of the vacuum tube connector (110) penetrates the bakelite board (103) and extends into the interior of the frame (1). An adjustable plate (111) is provided inside the frame (1). The adjustable plate (111) is installed and fastened to the inner wall of the frame (1) by screws. The surface at the top of the bakelite board (103) is open to the airflow. A stator pad (119) is installed by screws. A positioning base (118) is installed on the surface of the top position of the stator pad (119). A terminal socket assembly (120) is installed on the surface of the top position of the bakelite board (103). A board body (114) is installed on the surface of the top position of the bakelite board (103). A linear guide rail (115) is installed on the surface of the board body (114). An air inlet connector (116) is installed on the surface of the top position of the bakelite board (103) by screws. A spring fixing block (117) is installed on the surface of the board body (114) by screws. A tension spring (113) is installed on the surface of the spring fixing block (117).

3. The variable frequency stator testing integrated machine according to claim 1, characterized in that: The sealing assembly mechanism (2) consists of a mounting stud (21), a first O-ring seal (22), a second O-ring seal (23), and a sealing groove (24). The surface of the bakelite board (103) is threaded with mounting studs (21). One end of the mounting stud (21) passes through the bakelite board (103) and the frame (1) in sequence and is threadedly fastened to the surface of the bottom sealing cover (106).

4. The variable frequency stator testing integrated machine according to claim 1, characterized in that: The inner wall of the bottom sealing cover (106) is provided with a sealing groove (24), and a second O-ring (23) is installed inside the sealing groove (24). The surface of the second O-ring (23) is in contact with the surface at the bottom of the frame (1). A first O-ring (22) is installed on the surface at the bottom of the bakelite board (103), and the surface of the first O-ring (22) is in contact with the surface of the frame (1).

5. The variable frequency stator testing integrated machine according to claim 1, characterized in that: The adjustment limiting mechanism (3) consists of a fastening nut (31), an adjusting screw (32), a ball nut (33), a screw support seat (34), a V-shaped connecting plate (35), and a V-shaped block (36). The screw support seat (34) is installed on the surface of the top position of the bakelite board (103). The adjusting screw (32) is provided above the bakelite board (103). The surface of the adjusting screw (32) is threaded with a fastening nut (31). The surfaces of the adjusting screw (32) and the screw support seat (34) rotate and cooperate with each other.

6. The variable frequency stator testing integrated machine according to claim 5, characterized in that: The surface of the adjusting screw (32) is threaded with a ball nut (33), the ball nut (33) and the surface of the screw support seat (34) slide against each other, a V-shaped connecting plate (35) is installed on the surface of the top position of the ball nut (33), and a V-shaped block (36) is installed on the surface of the V-shaped connecting plate (35) by screws.

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