On-load tap-changer main shaft testing device

Abstract

The utility model discloses an on-load tap-changer main shaft testing device which comprises a machine table, a right-angle frame is installed on one side of the top end of the machine table in a sliding mode, a Y-axis lead screw linear module is installed on the top of the right-angle frame, a first gear motor used for driving the Y-axis lead screw linear module is installed on the outer wall of one side of the right-angle frame, and a second gear motor used for driving the Y-axis lead screw linear module is installed on the outer wall of the other side of the right-angle frame. A fixed plate is installed at the movable end of the Y-axis screw rod linear module, shaft body outer diameter measuring mechanisms are installed on the outer walls of the two sides of the fixed plate correspondingly, U-shaped frames are installed on the two sides of the top end of the machine table correspondingly, opposite clamping structures are installed in the two U-shaped frames correspondingly, a sliding block is installed at the bottom end of one U-shaped frame, and a sliding block is installed at the bottom end of the other U-shaped frame. The two sides of the top end of the machine table are provided with sliding grooves for sliding, a spindle to be measured is arranged between the two U-shaped frames, different positions and different measuring points of the spindle can be measured, and the accuracy of measured values is improved through measurement of the two shaft body outer diameter measuring mechanisms.

Description

Technical Field

[0001] The utility model relates to the technical field of main shaft testing devices, in particular to a main shaft testing device for an on-load tap changer. Background Art

[0002] With the continuous development of society, the construction industry has been booming, and the decoration of houses is one of the important components thereof. When decorating the walls of houses, it is often necessary to perform pre-polishing, so it is necessary to use a corresponding polishing device, such as a high-speed electric spindle performance test device disclosed in the authorization announcement number CN217980360U, comprising: a frame, including a stand and a shaft body, the surface of the stand is fixedly connected with a support plate, the shaft body acts on the surface of the stand, and the support mechanism comprises an adjustment groove, the adjustment groove is arranged on the surface of the support plate, and the inner side of the adjustment groove is slidably connected with an adjustment rod. The unevenness or surface defects of the spindle surface will cause bulges on the outer peripheral surface of the shaft body, resulting in different diameters of the spindle surface. However, due to the lack of a movable measuring device, the above-mentioned spindle performance test device is difficult to measure the shaft diameter at different measuring points at different positions of the spindle when in use, and it is difficult for the staff to obtain whether the spindle shaft body has a protrusion or other surface defects. If the protrusion on the spindle surface affects the safety of the working process or equipment, it will cause accidents and safety problems. Utility Model Content

[0003] The utility model aims to provide a main shaft testing device for an on-load tap changer, so as to solve the problem that the device proposed in the above background technology is difficult to measure the shaft diameter at different measuring points at different positions of the main shaft, and it is difficult for the staff to determine whether the main shaft has protrusions or other surface defects.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a spindle testing device for an on-load tap changer, comprising a machine platform, a right-angle frame is slidably installed on one side of the top of the machine platform, a Y-axis screw linear module is installed on the top of the right-angle frame, a reduction motor 1 for driving the Y-axis screw linear module is installed on the outer wall of one side of the right-angle frame, a fixed plate is installed on the movable end of the Y-axis screw linear module, and shaft outer diameter measuring mechanisms are installed on the outer walls of both sides of the fixed plate, U-shaped frames are installed on both sides of the top of the machine platform, and opposing clamping structures are installed inside the two U-shaped frames, a slider is installed at the bottom end of one of the U-shaped frames, and both sides of the top of the machine platform are provided with sliding grooves for sliding the slider, a spindle to be tested is arranged between the two U-shaped frames, an X-axis driving mechanism for driving the right-angle frame to slide is installed on the top of the machine platform, and a control panel is installed on the outer wall of one side of the right-angle frame, and the output end of the control panel is electrically connected to the reduction motor 1, the shaft outer diameter measuring mechanism, and the input end of the X-axis driving mechanism.

[0005] Preferably, the Y-axis screw linear module includes a screw rotatably mounted on the inner wall of one side of the right-angle frame, and two nut pairs installed at the threads on the surface of the screw, and the fixing plate is installed at the bottom end of the nut pair.

[0006] Preferably, the shaft outer diameter measuring mechanism includes an electric push rod installed on the outer walls on both sides of the fixed plate, the input end of the electric push rod is electrically connected to the output end of the control panel, measuring rings are hinged on both sides of the bottom end of the fixed plate, a digital micrometer is installed on one end of the surface of the measuring ring, a folding rod is hinged on the outer wall of one side of the measuring ring, and the top of the folding rod is hinged to the bottom end of the piston rod of the electric push rod.

[0007] Preferably, the opposing clamping structure includes a bidirectional screw rod rotatably mounted inside the U-shaped frame, a nut pair is installed at the threads at both ends of the surface of the bidirectional screw rod, and a chuck for clamping and fixing the spindle to be measured is installed at the top of the nut pair.

[0008] Preferably, the length of the slide groove is less than or equal to the distance between the two U-shaped frames, and a guide rail of the same length as the slide groove is installed inside the slide groove, and the guide rail is slidably matched with the slider.

[0009] Preferably, the X-axis driving mechanism includes a support frame installed on one side of the top of the machine platform, and a reduction motor 2 installed on the top of the support frame, the input end of the reduction motor 2 is electrically connected to the output end of the control panel, the output end of the reduction motor 2 is installed with a gear, and a gear plate is installed on the back of the right-angle frame, and the gear plate and the gear are meshed with each other.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows: the on-load tap changer spindle testing device is provided with a Y-axis screw linear module, a shaft outer diameter measuring mechanism, an X-axis driving mechanism and other structures that cooperate with each other. The staff starts the shaft outer diameter measuring mechanism through the control panel, so that the movable end of the shaft outer diameter measuring mechanism measures the shaft outer diameter around the two outer side surfaces of the spindle to be tested. When the movable end of the shaft outer diameter measuring mechanism moves along the Z-axis direction, the movement trajectory of the two digital display micrometers at the bottom end of the shaft outer diameter measuring mechanism will form an arc, so as to measure the outer diameter of the front and rear outer surfaces of the spindle to be tested. The Y-axis screw linear module The shaft outer diameter measuring mechanism is arranged to measure any measuring points of the spindle to be tested at different fixed positions in the Y-axis direction, thereby improving the testing flexibility of the testing device. The staff starts the X-axis driving mechanism through the control panel. The X-axis driving mechanism can push the right-angle frame to move in the X-axis direction, so that the two shaft outer diameter measuring mechanisms can measure different measuring points on the surface of the spindle to be tested in the X-axis direction. The various structures are coordinated with each other to improve the measurement efficiency and accuracy. The staff can clamp and fix the spindles to be tested with different diameters and lengths by adjusting the opposing clamping structures. It is highly flexible and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a side view structural schematic diagram of the utility model;

[0012] Figure 2 This is a schematic diagram of the main structure of the utility model;

[0013] Figure 3 It is an enlarged structural diagram of the shaft outer diameter measuring mechanism of the utility model;

[0014] Figure 4 For the utility model Figure 1 Enlarged structural diagram at A in the middle.

[0015] In the figure: 1. Machine table; 2. Right angle bracket; 3. Reducer motor 1; 4. Y-axis lead screw linear module; 5. Fixed plate; 6. Shaft outer diameter measuring mechanism; 601. Electric push rod; 602. Folding rod; 603. Measuring ring; 604. Digital micrometer; 7. U-shaped bracket; 8. Opposite clamping structure; 801. Bidirectional lead screw; 802. Nut pair 1; 803. Chuck; 9. Slide; 10. X-axis driving mechanism; 1001. Reducer motor 2; 1002. Gear; 1003. Tooth plate; 11. Spindle to be measured; 12. Control panel. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in 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.

[0017] See also Figure 1-4 The utility model provides an embodiment: a spindle test device for an on-load tap changer, comprising a machine platform 1, a right-angle frame 2 is slidably mounted on one side of the top of the machine platform 1, a control panel 12 is mounted on the outer wall of one side of the right-angle frame 2, a Y-axis screw linear module 4 is mounted on the top of the right-angle frame 2, a fixed plate 5 is mounted on the movable end of the Y-axis screw linear module 4, and shaft outer diameter measuring mechanisms 6 are mounted on both sides of the outer walls of the fixed plate 5, a reduction motor 3 for driving the Y-axis screw linear module 4 is mounted on the outer wall of one side of the right-angle frame 2, the Y-axis screw linear module 4 includes a screw rotatably mounted on the inner wall of one side of the right-angle frame 2, and two nut pairs mounted on the threaded portion of the screw surface, and the bottom end of the nut pair is mounted on the fixed plate 5;

[0018] The staff turns on the reduction motor 3 through the control panel 12, and the reduction motor 3 drives the screw rod to rotate. The two nut pairs move on the screw rod surface through the rotation of the screw rod, and then drive the fixed plate 5 and the shaft outer diameter measuring mechanism 6 to move in the Y-axis direction. The setting of the Y-axis screw linear module 4 enables the shaft outer diameter measuring mechanism 6 to flexibly measure any measuring point at different positions in the Y-axis direction;

[0019] The shaft outer diameter measuring mechanism 6 includes an electric push rod 601 installed on the outer walls of both sides of the fixing plate 5, the input end of the electric push rod 601 is electrically connected to the output end of the control panel 12, both sides of the bottom end of the fixing plate 5 are hinged with a measuring ring 603, one end of the surface of the measuring ring 603 is installed with a digital display type micrometer 604, and a folding rod 602 is hinged on the outer wall of one side of the measuring ring 603, and the top end of the folding rod 602 is hinged with the bottom end of the piston rod of the electric push rod 601;

[0020] The staff starts the electric push rod 601 by starting the control panel 12. The bottom end of the electric push rod 601 pulls the folding rod 602 to move up and down. Since the folding rod 602 is hinged with the measuring ring 603, when the two folds and the measuring ring 603 are pulled by the electric push rod 601, the two digital dial gauges 604 are pulled to open and close, so that the measuring ring 603 can cover the object to be measured. When the measuring ring 603 is pulled upward, the probe part of the digital dial gauge 604 and the contact part of the object to be measured are in an arc shape to measure the object to be measured, so that the outer peripheral surface wrapping measurement can be performed on the front and rear surfaces of the object to be measured;

[0021] U-shaped frames 7 are installed on both sides of the top of the machine 1, a slider is installed at the bottom of one of the U-shaped frames 7, and slide grooves 9 for the slider to slide are arranged on both sides of the top of the machine 1. A spindle 11 to be tested is arranged between the two U-shaped frames 7, and opposing clamping structures 8 are installed inside the two U-shaped frames 7. The opposing clamping structures 8 include a bidirectional screw rod 801 rotatably installed inside the U-shaped frame 7, and nut pairs 802 are installed at the threads at both ends of the surface of the bidirectional screw rod 801. A chuck 803 for clamping and fixing the spindle 11 to be tested is installed on the top of the nut pair 802;

[0022] The staff rotates the handle on the outer wall of one side of the U-shaped frame 7, and the handle drives the bidirectional screw 801 to rotate. The two nut pairs 802 move relatively or oppositely on the surface of the bidirectional screw 801 through the rotation of the bidirectional screw 801, thereby driving the two chucks 803 to move closer to each other or relatively away from each other, thereby achieving the clamping and fixing effect of the opposite clamping structure 8 on the spindle 11 to be measured;

[0023] The length of the slide 9 is less than or equal to the distance between the two U-shaped frames 7. A guide rail of the same length as the slide 9 is installed inside the slide 9. The guide rail and the slider are slidably matched. One of the U-shaped frames 7 can move, so that the two U-shaped frames 7 can clamp and fix the spindles 11 to be tested of different lengths, thereby increasing the flexibility of the test device.

[0024] An X-axis driving mechanism 10 for driving the right-angle frame 2 to slide is installed at the top of the machine 1. The output end of the control panel 12 is electrically connected to the reduction motor 1 3, the shaft outer diameter measuring mechanism 6, and the input end of the X-axis driving mechanism 10. The X-axis driving mechanism 10 includes a support frame installed on one side of the top of the machine 1, and a reduction motor 2 1001 installed on the top of the support frame. The input end of the reduction motor 2 1001 is electrically connected to the output end of the control panel 12. A gear 1002 is installed at the output end of the reduction motor 2 1001. A tooth plate 1003 is installed on the back of the right-angle frame 2. The tooth plate 1003 and the gear 1002 are meshed with each other.

[0025] The staff turns on the reduction motor 1001 through the control panel 12, and the reduction motor 1001 drives the gear 1002 to rotate. The rotation of the gear 1002 drives the toothed plate 1003 on the back of the right-angle frame 2 to move along the X-axis direction, thereby enabling the right-angle frame 2 to move in the X-axis direction, so that the shaft outer diameter measuring mechanism 6 can measure at different measuring points in the X-axis direction of the main shaft 11 to be measured.

[0026] When the embodiment of the present application is used, the staff first adjusts the opposite clamping structure 8 at the fixed end so that the opposite clamping structure 8 fixes the spindle 11 to be measured, and then the staff moves the opposite clamping structure 8 at the mobile end so that the opposite clamping structure 8 at the mobile end fixes the other end of the spindle 11 to be measured, and then starts the reduction motor 3 through the control panel 12. The reduction motor 3 adjusts the Y-axis screw linear module 4 so that the fixed plate 5 is directly above the spindle 11 to be measured, and then the staff starts the shaft outer diameter measuring mechanism 6 through the control panel 12 so that the shaft body The movable end of the outer diameter measuring mechanism 6 covers the outer peripheral surface of the spindle 11 to be measured, and the probe part contacts the outer surface of the spindle 11 to be measured. During the movement of the movable end of the shaft outer diameter measuring mechanism 6, the shaft diameter is measured on the inner and outer surfaces of the spindle 11 to be measured, and then the X-axis driving mechanism 10 is started through the control panel 12. The X-axis driving mechanism 10 drives the right-angle frame 2 to move along the X-axis direction of the machine table 1, so that the shaft outer diameter measuring mechanism 6 can measure different measuring points of the total length of the spindle 11 to be measured along the X-axis. One of the U-shaped frames 7 is slidably installed on the machine On the slide groove 9 inside the table 1, the distance between the two U-shaped frames 7 can be adjusted according to the length of the spindle 11 to be measured. By adjusting the opposite clamping structure 8, the spindles 11 to be measured with different diameters and lengths can be clamped and fixed. It is highly flexible and easy to use. The setting of the Y-axis screw linear module 4 enables the shaft outer diameter measuring mechanism 6 to flexibly measure the spindle 11 to be measured at different positions and any measuring points in the Y-axis direction. By setting the shaft outer diameter measuring mechanism 6, first, the two measuring rings 603 are wrapped around the spindle 11 to be measured. When the movable end of the shaft outer diameter measuring mechanism 6 moves along the Z-axis direction, the movement trajectory of the two digital micrometers 604 fixed on the surface of the measuring ring 603 forms an arc. The probe of the digital micrometer 604 can measure the shaft diameter of the front and rear outer surfaces of the spindle 11 to be measured. The right-angle frame 2 can be moved in the X-axis direction through the X-axis driving mechanism 10, so as to realize the measurement of different measuring points on the surface of the spindle 11 to be measured in the X-axis direction by the two shaft outer diameter measuring mechanisms 6. The various structures are coordinated with each other to improve the measurement efficiency and accuracy.

Claims

1. A main shaft testing device for an on-load tap changer, characterized in that: The machine comprises a platform (1), a right angle frame (2) is slidably mounted on one side of the top of the platform (1), a Y-axis screw linear module (4) is mounted on the top of the right angle frame (2), a reduction motor (3) for driving the Y-axis screw linear module (4) is mounted on the outer wall of one side of the right angle frame (2), a fixed plate (5) is mounted on the movable end of the Y-axis screw linear module (4), and shaft outer diameter measuring mechanisms (6) are mounted on the outer walls of both sides of the fixed plate (5), U-shaped frames (7) are mounted on both sides of the top of the platform (1), and oppositely-directed measuring mechanisms (6) are mounted inside the two U-shaped frames (7). A clamping structure (8), wherein a slider is installed at the bottom end of one of the U-shaped frames (7), and slide grooves (9) for the slider to slide are arranged on both sides of the top of the machine platform (1), and a spindle (11) to be measured is arranged between the two U-shaped frames (7). An X-axis driving mechanism (10) for driving the right-angle frame (2) to slide is installed at the top of the machine platform (1), and a control panel (12) is installed on the outer wall of one side of the right-angle frame (2), and the output end of the control panel (12) is electrically connected to a reduction motor (3), a shaft outer diameter measuring mechanism (6), and an input end of the X-axis driving mechanism (10).

2. The on-load tap changer main shaft testing device according to claim 1, characterized in that: The Y-axis screw linear module (4) comprises a screw rotatably mounted on the inner wall of one side of the right-angle frame (2), and two nut pairs mounted on the threads on the surface of the screw, and the fixing plate (5) is mounted on the bottom end of the nut pair.

3. The on-load tap changer main shaft testing device according to claim 1, characterized in that: The shaft outer diameter measuring mechanism (6) comprises an electric push rod (601) mounted on the outer walls of both sides of the fixing plate (5); the input end of the electric push rod (601) is electrically connected to the output end of the control panel (12); both sides of the bottom end of the fixing plate (5) are hinged with a measuring ring (603); a digital micrometer (604) is mounted on one end of the surface of the measuring ring (603); a folding rod (602) is hinged on the outer wall of one side of the measuring ring (603); the top end of the folding rod (602) is hinged with the bottom end of the piston rod of the electric push rod (601).

4. The on-load tap changer main shaft testing device according to claim 1, characterized in that: The opposing clamping structure (8) comprises a bidirectional screw (801) rotatably mounted inside the U-shaped frame (7), a nut pair (802) being mounted at the threads at both ends of the surface of the bidirectional screw (801), and a chuck (803) for clamping and fixing the spindle (11) to be measured being mounted at the top end of the nut pair (802).

5. The on-load tap changer main shaft testing device according to claim 1, characterized in that: The length of the slide groove (9) is less than or equal to the distance between the two U-shaped frames (7), and a guide rail of the same length as the slide groove (9) is installed inside the slide groove (9), and the guide rail is slidably matched with the slider.

6. The on-load tap changer main shaft testing device according to claim 1, characterized in that: The X-axis driving mechanism (10) comprises a support frame installed on one side of the top of the machine platform (1), and a second reduction motor (1001) installed on the top of the support frame, the input end of the second reduction motor (1001) is electrically connected to the output end of the control panel (12), the output end of the second reduction motor (1001) is installed with a gear (1002), and the back of the right-angle frame (2) is installed with a toothed plate (1003), and the toothed plate (1003) and the gear (1002) are meshed with each other.

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