A rotor inter-turn cooperation measuring gauge device

Abstract

The application relates to the technical field of inter-turn withstand voltage test tools, in particular to a rotor inter-turn cooperation measuring tool device, which comprises a rotating ring used for sleeving a rotor rotating shaft; an elastic telescopic rod comprising a fixed rod, a movable rod and an elastic reset piece, the fixed rod being fixedly connected to the rotating ring, the movable rod being fixedly connected in the circumferential direction and movably connected in the axial direction to the fixed rod, and the elastic reset piece being used for keeping the movable rod and the fixed rod in a contracted state; an adjusting assembly comprising an adjusting rod and an adjusting screw rod, the adjusting rod being fixedly connected in the circumferential direction and movably connected in the axial direction to the movable rod, the end of the adjusting screw rod being axially fixedly connected to the movable rod and circumferentially rotatably connected to the adjusting rod through the adjusting rod, and the adjusting screw rod being threadedly connected to the adjusting rod; an insulating mounting base fixedly connected to the adjusting rod through a connecting rod; and a plurality of probe assemblies, each probe assembly comprising an electrically connected column and an L-shaped probe... The application has the advantages of convenient tool installation and convenient test end connection of the instrument.

Description

Technical Field

[0001] This application relates to the technical field of inter-turn withstand voltage test fixtures, and in particular to a rotor inter-turn fit measurement fixture device. Background Technology

[0002] In the manufacturing process of Z-series rotors, the inter-turn withstand voltage test is a crucial step in ensuring product quality and safety. This test requires operation on the commutator ladder, especially for vertical commutators, where the gaps between the ladders are almost non-existent, posing a significant challenge to the installation of the withstand voltage test fixtures.

[0003] Currently, the common approach to addressing this problem is to avoid using testing fixtures. One method involves one person manually holding the two test ends of the instrument and bringing them into contact with the commutator ladder, while another person operates the instrument to conduct the test. Another method involves using auxiliary tools such as tape and rubber bands to fix the two test ends of the instrument to the ladder.

[0004] However, both methods have significant drawbacks. The manual holding method is prone to loosening due to the difficulty in ensuring stability over a long period of time. This can lead to insecure fixing, potentially causing the test end to fall and affecting the test process. It can also cause the test end to inadvertently come into contact with adjacent commutator ladders, resulting in misjudgments and seriously affecting the accuracy of the test results.

[0005] Using tape or rubber bands for fixation also cannot ensure that the test end is firmly attached to the ladder. With the influence of vibration or other external forces during the test, the tape may lose its adhesiveness, and the rubber band may loosen due to elastic fatigue, eventually leading to the failure of the test end fixation, resulting in problems such as falling off or contact with adjacent ladders, which also negatively affects the reliability of the test results. Summary of the Invention

[0006] To address the above technical problems, this application provides a rotor turn-to-turn fit measurement fixture device.

[0007] This application provides a rotor turn-to-turn fit measuring fixture device, which adopts the following technical solution: A rotor turn-to-turn fit measuring fixture device includes: a rotating ring for fitting onto a rotor shaft; an elastic telescopic rod including a fixed rod, a movable rod, and an elastic reset member, wherein the fixed rod is fixedly connected to the rotating ring, the movable rod is circumferentially fixed and axially movablely connected to the fixed rod, and the elastic reset member is used to keep the movable rod and the fixed rod in a retracted state; an adjusting assembly including an adjusting rod and an adjusting screw, wherein the adjusting rod is circumferentially fixed and axially movablely mounted on the movable rod, and the end of the adjusting screw passes through the adjusting rod and is axially fixed and circumferentially rotatably connected to the movable rod, and the adjusting screw is threadedly connected to the adjusting rod; an insulating mounting base fixedly connected to the adjusting rod via a connecting rod; and multiple probe assemblies, each probe assembly including a grounding post and an L-shaped probe, wherein the grounding post is fixedly mounted on the insulating mounting base, the L-shaped probe is connected to the grounding post via a damping structure, and the L-shaped probe can rotate on the grounding post, and the grounding post and the L-shaped probe are electrically connected.

[0008] In one embodiment: the measuring fixture further includes a fixing clamp, which includes a fixing collar and a plurality of clamping rods that are radially adjustable along the fixing collar, and the rotating ring is rotatably mounted on the fixing collar.

[0009] In one embodiment: a positioning structure for positioning the position of the elastic telescopic rod is provided between the fixed collar and the rotating ring.

[0010] In one embodiment: the positioning structure includes a roller that is rolled on a fixed collar, an elastic element for keeping the roller in contact with the inner wall of the rotating ring, and the fixed collar is provided with a triangular mounting groove for mounting the roller.

[0011] In one embodiment: the positioning structure includes a first positioning tooth disposed on the outer circle of the fixed collar and a positioning plate disposed on the movable rod, wherein one end face of the positioning plate is provided with a second positioning tooth that cooperates with the first positioning tooth.

[0012] In one embodiment: the movable rod includes a first rod and a second rod, which are hinged together. One end of the first rod is slidably connected to a fixed rod, and one end of the second rod is slidably connected to an adjusting rod. When no force is applied, the hinge point between the first rod and the second rod is located inside the fixed rod.

[0013] In one embodiment: a piston is provided at one end of the movable rod located inside the fixed rod, and a one-way valve is provided at the end of the fixed rod away from the movable rod, and a damping vent hole is provided on the one-way valve.

[0014] In one embodiment: the one-way valve includes a valve body, a valve head mounted on the valve body, a valve ball disposed in the valve body, and a return spring for pressing the valve ball against the valve head, the ends of the return spring respectively abutting against the valve body and the valve ball, and the valve head is provided with an air inlet; the valve head is threadedly connected to the valve body, and the damping vent hole is disposed on the valve head, and adjusting the installation position of the valve head can change the size of the damping vent hole.

[0015] In one embodiment, the damping structure between the L-shaped probe and the terminal post is a compression spring or multiple disc springs.

[0016] In one embodiment: the damping structure is a compression spring, and the L-shaped probe has a mounting hole for the electrode post to pass through. The mounting hole is either an oblong hole or a circular hole with a diameter larger than that of the electrode post. In summary, this application has the following beneficial effects: by rotating the ring onto the rotor shaft, adjusting the adjusting assembly to make the insulating mounting seat abut against the commutator, and maintaining this abutment through the elastic force of the elastic reset member, then adjusting the position of the probe assembly so that the two L-shaped probes are located in the commutator ladder to be tested, and finally connecting the two test terminals of the instrument to the electrode post respectively. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of Embodiment 1; Figure 2 This is the main sectional view of Embodiment 1; Figure 3 This is a schematic diagram of the exploded structure of Example 1; Figure 4 This is a structural schematic diagram of Embodiment 2; Figure 5 This is a schematic diagram of a positioning structure in Embodiment 3; Figure 6 This is a schematic diagram of another positioning structure in Embodiment 3; Figure 7 This is a structural schematic diagram of Embodiment 4; Figure 8 This is a structural schematic diagram of Example 5; Figure 9 This is a schematic diagram of the one-way valve in Embodiment 5; Figure 10 This is a structural schematic diagram of Embodiment Six.

[0018] In the diagram, 100 is the rotating ring; 200 is the elastic telescopic rod; 210 is the fixed rod; 211 is the cover; 220 is the movable rod; 221 is the slider; 222 is the first rod; 223 is the second rod; 224 is the piston; 230 is the elastic reset component; 240 is the connecting section; 241 is the slot; 250 is the adjusting nut; 310 is the adjusting rod; 320 is the adjusting screw; 321 is the snap-fit ​​bolt; 322 is the adjusting handwheel; 400 is the insulating mounting base; 410 is the connecting rod; 420 is the rubber pad; and 500 is the probe assembly. 510. Electrical connection post; 520. L-shaped probe; 521. Mounting hole; 530. Damping structure; 540. Compression nut; 600. Fixing clamp; 610. Fixing collar; 620. Clamping rod; 630. Pad; 700. Positioning structure; 710. Roller; 720. Elastic element; 730. First positioning tooth; 740. Positioning plate; 750. Second positioning tooth; 800. Check valve; 810. Valve body; 820. Valve head; 821. Damping vent hole; 830. Valve ball; 840. Return spring. Detailed Implementation

[0019] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0020] In the description of this application, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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 application.

[0021] Example 1: A rotor turn-to-turn fit measuring fixture device, such as Figure 1 As shown, it includes a rotating ring 100, an elastic telescopic rod 200, an adjustment assembly, an insulating mounting base 400, and a probe assembly 500.

[0022] The rotating ring 100 has a circular structure and its size is larger than that of the rotor shaft. It can be inserted into the rotor shaft during use.

[0023] Reference Figure 2 and Figure 3The elastic telescopic rod 200 includes a fixed rod 210, a movable rod 220, and an elastic reset member 230. The fixed rod 210 is fixedly connected to the rotating ring 100. The movable rod 220 is circumferentially fixed and axially movable connected to the fixed rod 210. Specifically, the movable rod 220 is inserted into the fixed rod 210. The insertion hole on the fixed rod 210 is a polygonal hole. In this embodiment, a hexagon is used as an example, but it is not limited to hexagons; it can also be triangular, quadrilateral, pentagonal, etc. A slider 221 adapted to the insertion hole on the fixed rod 210 is provided at one end of the movable rod 220.

[0024] To facilitate the overall installation of the elastic telescopic rod 200, a cap 211 is threaded onto the opening end of the insertion hole of the fixed rod 210. The elastic reset member 230 is sleeved on the movable rod 220 and located inside the fixed rod 210, with both ends of the elastic reset member 230 abutting against the slider 221 and the cap 211 respectively. The elastic reset member 230 keeps the movable rod 220 and the fixed rod 210 in a retracted state.

[0025] The adjustment assembly includes an adjustment rod 310 and an adjustment screw 320. The adjustment rod 310 is circumferentially fixed and axially movable on the movable rod 220. Specifically, to achieve circumferential fixation and axial movable installation between the adjustment rod 310 and the movable rod 220, a connecting section 240 is threadedly connected to one end of the movable rod 220. The cross-section of the connecting section 240 is polygonal. The adjustment rod 310 is inserted into the connecting section 240. In this embodiment, a hexagon is used as an example, but it is not limited to hexagons; it can also be triangular, quadrilateral, pentagonal, etc.

[0026] In addition, to ensure the position of the insulating mounting base 400, an adjusting nut 250 is threadedly installed on the movable rod 220. Its function is to lock the connecting section 240 by tightening the adjusting nut 250 against the connecting section 240 after the connecting section 240 is connected to the movable rod 220 and the position is adjusted.

[0027] The end of the adjusting screw 320 passes through the adjusting rod 310 and is axially fixed and circumferentially rotatable to the movable rod 220. The adjusting screw 320 and the adjusting rod 310 are threaded together. Specifically, a radially oriented groove 241 is provided at the end of the connecting section 240, and a snap-fit ​​bolt 321 is provided at the end of the adjusting screw 320. The snap-fit ​​bolt 321 is connected to the groove 241, and with the adjusting rod 310 sleeved on the connecting section 240, axial fixation and circumferential rotation are achieved.

[0028] For easy adjustment, an adjustment handwheel 322 is provided at one end of the adjusting screw 320 that extends out of the adjusting rod 310.

[0029] The insulating mounting base 400 is fixedly connected to the adjusting rod 310 via the connecting rod 410. In order to better position the insulating mounting base 400 and protect the commutator ladder, a rubber pad 420 is provided at the bottom of the insulating mounting base 400. The insulating mounting base 400 itself is made of insulating material, and the rubber pad 420 can further improve the insulation between it and the commutator ladder.

[0030] Multiple probe assemblies 500 are provided; in this embodiment, two are used as an example.

[0031] Each probe assembly 500 includes a grounding post 510 and an L-shaped probe 520. The grounding post 510 is fixedly mounted on the insulating mounting base 400. The L-shaped probe 520 is connected to the grounding post 510 through a damping structure 530 and can rotate on the grounding post 510. The grounding post 510 and the L-shaped probe 520 are electrically connected.

[0032] Specifically, the damping structure 530 described above is a compression spring or multiple disc springs. In this embodiment, multiple disc springs are used as an example. In addition, the connecting post 510 is a threaded post structure, and a clamping nut 540 is threaded onto the connecting post. The clamping nut 540 presses the multiple disc springs onto the L-shaped probe 520. With the setting of the damping structure 530, it is ensured that the L-shaped probe 520 can rotate on the connecting post 510 without moving arbitrarily. This makes the adjustment of the two L-shaped probes 520 very convenient and quick. The contact with the commutator ladder to be detected can be quickly determined by adjusting the distance between the ends of the two L-shaped probes 520.

[0033] Example 2: As Figure 4 As shown, the difference from Embodiment 1 is that the measuring fixture device further includes a fixed clamp 600, which includes a fixed collar 610 and a plurality of clamping rods 620 that are radially adjustable along the fixed collar 610. The rotating ring 100 is rotatably mounted on the fixed collar 610.

[0034] In this embodiment, three clamping rods 620 are provided, and the three clamping rods 620 are equally spaced around the circumference. The clamping rods 620 are threaded to the fixing collar 610, and a pad 630 is provided at one end of the clamping rod 620 that penetrates into the fixing collar 610. The pad 630 is preferably made of a deformable material such as rubber, which serves to protect the rotor shaft and increase the contact area to improve the stability after clamping.

[0035] Example 3: The difference from Example 2 is that a positioning structure 700 for positioning the elastic telescopic rod 200 is provided between the fixed collar 610 and the rotating ring 100.

[0036] like Figure 5As shown, in one embodiment, the positioning structure 700 includes a roller 710 rolled on a fixed collar 610 and an elastic member 720 for maintaining the roller 710 in contact with the inner wall of the rotating ring 100. The fixed collar 610 has a triangular mounting groove for mounting the roller 710. The mounting groove is opened along the axial direction of the fixed collar 610 and passes through the outer end face of the fixed collar 610. With this structure, when the rotating ring 100 rotates counterclockwise, it will be jammed by the roller 710. Therefore, the rotating ring 100 can only rotate clockwise on the fixed collar 610 and cannot rotate counterclockwise.

[0037] This design allows the elastic telescopic rod 200 to tilt counterclockwise during the installation of the fixing collar 610, thus ensuring the stability of the insulating mounting base 400. Furthermore, after fixing the fixing collar 610, stepless adjustment can be achieved.

[0038] like Figure 6 As shown, in another embodiment, the positioning structure 700 includes a first positioning tooth 730 disposed on the outer circle of the fixed collar 610 and a positioning plate 740 disposed on the movable rod 220. One end face of the positioning plate 740 is provided with a second positioning tooth 750 that mates with the first positioning tooth 730. To facilitate the installation of the positioning plate 740, the positioning plate 740 is threadedly connected to the movable rod 220.

[0039] This design ensures that the fixed collar 610 and the rotating ring 100 remain locked when no force is applied. Only when the elastic telescopic rod 200 is stretched, causing the positioning plate 740 to move and separating the first positioning tooth 730 and the second positioning tooth 750, can the rotating ring 100 rotate on the fixed collar 610. This facilitates the installation of the fixing clamp 600 and ensures that the insulating mounting base 400 has a better stability during use. However, compared to the previous design, the drawback is that stepless adjustment is not possible.

[0040] Example 4: Figure 7 As shown, the difference from Embodiment 3 is that the movable rod 220 includes a first rod 222 and a second rod 223, which are hinged together. One end of the first rod 222 is slidably connected to the fixed rod 210, and one end of the second rod 223 is slidably connected to the adjusting rod 310.

[0041] The figure shows the state of the elastic telescopic rod 200 after being stretched under force. In the unstressed state, the hinge point between the first rod 222 and the second rod 223 is located inside the fixed rod 210. That is, the first rod 222 and the second rod 223 can only flip when the movable rod 220 is pulled out of the fixed rod 210 to a sufficient length under the stress.

[0042] By flipping the device, when the position of the insulating mounting base 400 needs to be adjusted, force can be applied to stretch the elastic telescopic rod 200 to separate the insulating mounting base 400 from the commutator ladder. Furthermore, since rotating the insulating mounting base 400 changes the direction of force, which could easily cause the elastic telescopic rod 200 to reset, this can be achieved by stretching and then flipping the device. This prevents the elastic telescopic rod 200 from resetting due to a change in the direction of force when adjusting the position of the insulating mounting base 400.

[0043] Example 5: Figure 8 As shown, the difference from Embodiment 4 is that the movable rod 220 is provided with a piston 224 at one end inside the fixed rod 210, and a one-way valve 800 is provided at the end of the fixed rod 210 away from the movable rod 220. The one-way valve 800 is provided with a damping vent hole 821.

[0044] like Figure 9 As shown, the one-way valve 800 includes a valve body 810, a valve head 820 installed in the valve body 810, a valve ball 830 disposed in the valve body 810, and a return spring 840 for pressing the valve ball 830 against the valve head 820. The valve body 810 is threadedly installed on the fixing rod 210. The end of the return spring 840 abuts against the valve body 810 and the valve ball 830 respectively. The valve head 820 is provided with an air inlet.

[0045] The valve head 820 is threaded to the valve body 810, and the damping vent 821 is located on the valve head 820. Adjusting the installation position of the valve head 820 can change the size of the damping vent 821.

[0046] In this embodiment, by setting up the one-way valve 800 and the damping vent hole 821, after the piston 224 rod is pulled out, the one-way valve 800 will allow air to enter the fixed rod 210, forming a damping effect. Therefore, when adjusting the position of the insulating mounting base 400, the change in the direction of force will not directly reset the elastic telescopic rod 200, but can only achieve a slow reset by venting through the damping vent hole 821.

[0047] Example 6: As Figure 10 As shown, the difference between the damping structure 530 in Embodiments 1-4 is that the damping structure 530 in this embodiment is a compression spring, and the L-shaped probe 520 is provided with a mounting hole 521 for the electrode post 510 to pass through. The mounting hole 521 is a waist-shaped hole or a round hole with a diameter larger than that of the electrode post 510. In this embodiment, a waist-shaped hole is used as an example.

[0048] With the above settings, the compression spring can achieve the function of damping rotation on the one hand, and on the other hand, it can provide distance compensation in the height direction by cooperating with the mounting hole 521. After the insulating mounting base 400 abuts against the commutator ladder, it can be directly rotated and adjusted by turning the L-shaped probe 520 so that one end is tilted up. In this way, it can be ensured that the L-shaped probe 520 will not scratch the commutator ladder during rotation.

[0049] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A rotor turn-to-turn fit measuring fixture device, characterized in that, include: A rotating ring (100) is used to be fitted onto the rotor shaft; The elastic telescopic rod (200) includes a fixed rod (210), a movable rod (220), and an elastic reset member (230). The fixed rod (210) is fixedly connected to the rotating ring (100). The movable rod (220) is circumferentially fixed and axially movable connected to the fixed rod (210). The elastic reset member (230) is used to keep the movable rod (220) and the fixed rod (210) in a retracted state. The adjustment assembly includes an adjustment rod (310) and an adjustment screw (320). The adjustment rod (310) is circumferentially fixed and axially movable on the movable rod (220). The end of the adjustment screw (320) passes through the adjustment rod (310) and is axially fixed and circumferentially rotatably connected to the movable rod (220). The adjustment screw (320) is threadedly connected to the adjustment rod (310). An insulating mounting base (400) is fixedly connected to an adjusting rod (310) via a connecting rod (410). Multiple probe assemblies (500) include a grounding post (510) and an L-shaped probe (520). The grounding post (510) is fixedly mounted on an insulating mounting base (400). The L-shaped probe (520) is connected to the grounding post (510) through a damping structure (530) and is rotatable on the grounding post (510). The grounding post (510) and the L-shaped probe (520) are electrically connected.

2. The rotor turn-to-turn fit measuring fixture device according to claim 1, characterized in that: The measuring fixture device further includes a fixed clamp (600), which includes a fixed collar (610) and a plurality of clamping rods (620) that are radially adjustable along the fixed collar (610). The rotating ring (100) is rotatably mounted on the fixed collar (610).

3. The rotor turn-to-turn fit measuring fixture device according to claim 2, characterized in that: A positioning structure (700) for positioning the elastic telescopic rod (200) is provided between the fixed collar (610) and the rotating ring (100).

4. The rotor turn-to-turn fit measuring fixture device according to claim 3, characterized in that: The positioning structure (700) includes a roller (710) that is rolled on a fixed collar (610) and an elastic element (720) for keeping the roller (710) in contact with the inner wall of the rotating ring (100). The fixed collar (610) is provided with a triangular mounting groove for mounting the roller (710).

5. The rotor turn-to-turn fit measuring fixture device according to claim 3, characterized in that: The positioning structure (700) includes a first positioning tooth (730) on the outer circle of the fixed collar (610) and a positioning plate (740) on the movable rod (220). One end face of the positioning plate (740) is provided with a second positioning tooth (750) that cooperates with the first positioning tooth (730).

6. A rotor turn-to-turn fit measuring fixture device according to claim 4 or 5, characterized in that: The movable rod (220) includes a first rod (222) and a second rod (223), which are hinged together. One end of the first rod (222) is slidably connected to the fixed rod (210), and one end of the second rod (223) is slidably connected to the adjusting rod (310). When no force is applied, the hinge point between the first rod (222) and the second rod (223) is located inside the fixed rod (210).

7. A rotor turn-to-turn fit measuring fixture device according to claim 4 or 5, characterized in that: The movable rod (220) is provided with a piston (224) at one end inside the fixed rod (210), and a one-way valve (800) is provided at the end of the fixed rod (210) away from the movable rod (220), and a damping vent hole (821) is provided on the one-way valve (800).

8. The rotor turn-to-turn fit measuring fixture device according to claim 7, characterized in that: The one-way valve (800) includes a valve body (810), a valve head (820) installed in the valve body (810), a valve ball (830) disposed in the valve body (810), and a return spring (840) for pressing the valve ball (830) against the valve head (820). The end of the return spring (840) abuts against the valve body (810) and the valve ball (830) respectively. The valve head (820) is provided with an air inlet. The valve head (820) is threadedly connected to the valve body (810). The damping vent hole (821) is disposed on the valve head (820). Adjusting the installation position of the valve head (820) can change the size of the damping vent hole (821).

9. The rotor turn-to-turn fit measuring fixture device according to claim 1, characterized in that: The damping structure (530) between the L-shaped probe (520) and the electrical contact post (510) is a compression spring or multiple disc springs.

10. The rotor turn-to-turn fit measuring fixture device according to claim 9, characterized in that: The damping structure (530) is a compression spring, and the L-shaped probe (520) is provided with a mounting hole (521) for the electrode post (510) to pass through. The mounting hole (521) is a waist-shaped hole or a round hole with a diameter larger than that of the electrode post (510).

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