Direct current motor test connecting shaft and adapter disc device

Abstract

The utility model provides a DC motor test connecting shaft and adapter disc device, comprising an adapter seat and a coupling, the adapter seat is provided with a connecting sleeve, and a spacing ring plate and a mounting ring plate respectively located at the front end and the rear end of the connecting sleeve, and the connecting sleeve is internally provided with three pressing plates which are uniformly distributed in the circumferential direction and are in radial sliding fit. A control combination used for controlling the three pressing plates to move synchronously is arranged outside the connecting sleeve. According to the direct current motor output shaft centering correction device, the three pressing plates and the control combination used for controlling the three pressing plates to move synchronously are arranged on the connecting sleeve, centering correction can be conveniently carried out on output shafts of different direct current motors, and then the pressing plates with kidney-shaped holes are rotationally connected to the back faces of the limiting annular plates; when the pressing plate rotates, the pressing plate can be connected with the mounting holes in the direct-current motors of different specifications through the kidney-shaped holes in the pressing plate and bolts, the direct-current motors of different specifications can be quickly connected in a butt joint mode through the arrangement, and the convenience of fastening connection of the direct-current motors and the mounting seat is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of DC motor performance testing, and specifically relates to a DC motor test connecting shaft and adapter plate device. Background Technique

[0002] After production, DC motors usually need to be subjected to performance tests. During the test, the DC motor is installed on a test bench, and then the rotational speed, torque, and operating temperature of the DC motor are detected through a test system to obtain the ultimate performance of the DC motor.

[0003] During the test, an adapter plate connected to the DC motor and a connecting shaft connected to the rotor of the DC motor are usually installed on the test equipment. The function of the adapter plate is to fix the DC motor, and the function of the connecting shaft is to transmit the rotation of the rotor of the DC motor to the test system. Currently, the DC motor and the adapter plate are usually directly connected by bolts, and the DC motor rotor and the connecting shaft are connected by a spline structure. However, the above-mentioned adapter plate and connecting shaft still have the following deficiencies when in use: 1. DC motors with different specifications have different mounting hole diameters, and the existing adapter plate is a fixed structure. When it is necessary to detect DC motors of other specifications, different specifications of adapter plates need to be replaced, and the disassembly and assembly of the adapter plate will greatly reduce the detection efficiency; 2. The outer diameters of the rotor output shafts of different DC motors are different, and the spline sleeve specifications on the existing connecting shaft are single, so it is difficult to dock with the output shafts of the rotor of DC motors of other specifications.

[0004] Therefore, the utility model provides a DC motor test connecting shaft and adapter plate device. Content of the Utility Model

[0005] Aiming at the deficiencies existing in the prior art, the purpose of the utility model is to provide a DC motor test connecting shaft and adapter plate device to solve the problems proposed in the above background technique. The utility model has the advantage of being more convenient for installing DC motors of other specifications, thereby enabling the test bench to quickly perform performance detection on various DC motors.

[0006] To achieve the above object, the utility model is realized through the following technical solutions: A DC motor test connecting shaft and adapter plate device, including an adapter seat and a coupling. A connecting sleeve, a limiting ring plate and a mounting ring plate are arranged on the adapter seat, with the limiting ring plate and the mounting ring plate located at the front and rear ends of the connecting sleeve respectively. Three pressing plates that are circumferentially evenly distributed and in radial sliding fit are arranged in the connecting sleeve. A control combination for controlling the synchronous movement of the three pressing plates is arranged outside the connecting sleeve. Four pads that are axially evenly distributed are rotatably connected to the back of the limiting ring plate. A waist-shaped hole is penetrated and opened on one side of the pad, and a locking bolt whose one end is used in cooperation with the back of the limiting ring plate is also penetrated and screwed on one side of the pad. One end of the coupling is axially elastically slidably connected with a stepped pipe, and the other end is fixedly connected with a flange plate. Spline grooves that are circumferentially evenly distributed are opened on the inner peripheral walls with different hole diameters in the small end of the stepped pipe facing the coupling.

[0007] Further, a guiding shaft is welded on one side of the pressing plate, and a guiding hole that is slidably matched with the guiding shaft is opened on the inner peripheral wall of the connecting sleeve.

[0008] Further, the control combination includes a lead screw and a transmission ring. The lead screw penetrates the outer peripheral wall of the connecting sleeve and is rotatably connected. One end of the lead screw is in screw fit with one side of the pressing plate, and the other end is fixedly connected with a bevel gear. The transmission ring is sleeved outside the connecting sleeve and the two are rotatably connected. A bevel gear ring that is meshed with the bevel gear is fixedly connected to one side of the transmission ring.

[0009] Further, at least three handle bars are welded on the outer peripheral wall of the transmission ring.

[0010] Further, a limiting shaft is welded on one side of the pad, and a positioning hole that is rotatably connected with the limiting shaft is penetrated and opened on one side of the limiting ring plate.

[0011] Further, the limiting shaft is of a T-shaped structure, and the positioning hole is a stepped hole.

[0012] Further, a supporting spring is sleeved on the coupling and located between the stepped pipe and the flange plate.

[0013] The beneficial effects of the utility model are as follows:

[0014] 1. In the utility model, by arranging three pressing plates and a control combination for controlling the synchronous movement of the three pressing plates on the connecting sleeve, it is convenient to center and correct the output shafts of different DC motors. Then, pads with waist-shaped holes are rotatably connected to the back of the limiting ring plate. When the pads rotate, they can be bolted through the waist-shaped holes on them and the mounting holes on DC motors of different specifications. This setting enables the adapter seat to quickly dock with DC motors of different specifications, greatly improving the convenience of firmly connecting different DC motors and the mounting seat.

[0015] 2. In the present utility model, a stepped pipe is axially elastically slidably connected to one end of the coupling. Then, circumferentially uniformly distributed spline grooves are provided on the inner peripheral walls with different hole diameters in the stepped pipe. This kind of setting enables the stepped pipe to be docked with output shafts of different outer diameters on different specifications of DC motors, greatly improving the applicable range of the present device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of a DC motor test connecting shaft and adapter plate device of the present utility model;

[0017] Figure 2 is a schematic diagram of the adapter base of a DC motor test connecting shaft and adapter plate device of the present utility model;

[0018] Figure 3 is a schematic diagram after the explosion and expansion of the backing plate and connecting sleeve of a DC motor test connecting shaft and adapter plate device of the present utility model;

[0019] Figure 4 is a schematic diagram of the cooperation of the transmission ring, lead screw and pressure plate of a DC motor test connecting shaft and adapter plate device of the present utility model.

[0020] In the figure: 1. Adapter base; 11. Connecting sleeve; 111. Guide hole; 12. Limit ring plate; 121. Positioning hole; 13. Mounting ring plate; 2. Coupling; 21. Flange; 3. Pressure plate; 31. Guide shaft; 52. Limit shaft; 4. Control assembly; 41. Lead screw; 411. Bevel gear; 42. Transmission ring; 421. Bevel gear ring; 422. Handle; 5. Backing plate; 51. Kidney-shaped hole; 6. Locking bolt; 7. Stepped pipe; 71. Spline groove; 8. Support spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] In order to make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] Please refer to Figures 1 to 4 , the present utility model provides a technical solution: a DC motor test connecting shaft and adapter plate device, including an adapter base 1 and a coupling 2. When in use, the adapter base 1 is installed on the test bench, which is used to dock with an external DC motor to be tested, and the coupling 2 is rotatably connected to the external test bench, which is a bridge connecting the output shaft of the charging DC motor and the test system.

[0023] In this technical solution, a connecting sleeve 11, a limiting ring plate 12 and a mounting ring plate 13 are provided on the adapter base 1. The limiting ring plate 12 and the mounting ring plate 13 are respectively located at the front and rear ends of the connecting sleeve 11. Connecting holes are evenly distributed circumferentially on the mounting ring plate 13. The adapter base 1 is mounted on the vertical plate of the test bench through the mounting ring plate 13 and bolts. Three pressing plates 3 are arranged in the connecting sleeve 11 and are evenly distributed circumferentially and are in radial sliding fit. Specifically, preferably during implementation, a guiding shaft 31 is welded to one side of the pressing plate 3, and a guiding hole 111 that is in sliding fit with the guiding shaft 31 is provided on the inner peripheral wall of the connecting sleeve 11. The space between the three pressing plates 3 is the space through which the output shaft of the DC motor passes. A control assembly 4 for controlling the synchronous movement of the three pressing plates 3 is provided outside the connecting sleeve 11. Here, the synchronous movement means synchronous centripetal and synchronous away movement. This setting makes it convenient for the output shaft of the DC motor to be coaxial with the connecting sleeve 11, aiming to ensure that it can be docked with the coupling 2 after being fixedly installed.

[0024] Specifically, the control assembly 4 includes a lead screw 41 and a transmission ring 42. The lead screw 41 passes through the outer peripheral wall of the connecting sleeve 11 and is rotatably connected. One end of the lead screw 41 is in screw fit with one side of the pressing plate 3, and the other end thereof is fixedly connected with a bevel gear 411. Specifically, a screw sleeve that is in screw fit with the lead screw 41 can be welded to one side of the pressing plate 3. The transmission ring 42 is sleeved outside the connecting sleeve 11 and the two are rotatably connected. A bevel gear ring 421 that meshes with the bevel gear 411 is fixedly connected to one side of the transmission ring 42. Thus, when the transmission ring 42 rotates, the corresponding lead screw 41 can be driven to rotate through each bevel gear 411, and then the pressing plate 3 can be driven to move.

[0025] Four pads 5 are rotatably connected to the back surface of the limiting ring plate 12 and are evenly distributed axially. Specifically, preferably during implementation, a limiting shaft 52 is welded to one side of the pad 5, and a positioning hole 121 that is in rotatable connection with the limiting shaft 52 is provided through one side of the limiting ring plate 12. Among them, the limiting shaft 52 is of a T-shaped structure, and the positioning hole 121 is a stepped hole. Multiple pads 5 can also be provided as required. Among them, the four pads 5 are evenly distributed circumferentially relative to the limiting ring plate 12. A waist-shaped hole 51 is provided through one side of the pad 5. This waist-shaped hole 51 is the part connected to the mounting hole of the DC motor through bolts. A locking bolt 6 whose one end is in screw fit with the back surface of the limiting ring plate 12 is also provided through one side of the pad 5. The function of the locking bolt 6 is to lock the pad 5 on the limiting ring plate 12 by using friction. When the mounting hole on the external DC motor is fixedly connected to the corresponding waist-shaped hole 51 on the pad 5 through bolts, at this time, the DC motor and the adapter base 1 are in a firmly connected state. For other specifications of DC motors with changes in the positions of the mounting holes, only need to swing the pad 5 and then tighten the locking bolt 6 to conveniently and fixedly connect with this specification of DC motor through bolts.

[0026] One end of the coupling 2 is axially elastically and slidably connected to a stepped pipe 7, and the other end is fixedly connected to a flange 21. The flange 21 and the rotating disk in the test system are connected by bolts. There are at least three steps on the stepped pipe 7, and each step corresponds to a docking aperture. The small end of the stepped pipe 7 faces the coupling 2, and circumferentially uniformly distributed spline grooves 71 are provided on the inner peripheral walls of different apertures therein. That is to say, the stepped pipe 7 is connected to the output shafts of different DC motors through a spline structure, and the channels with different apertures in the stepped pipe 7 correspond to the output shafts of different DC motors.

[0027] Furthermore, a support spring 8 is sleeved on the coupling 2 and is located between the stepped pipe 7 and the flange 21. The function of the support spring 8 is to enable the wet stepped pipe 7 to be in close docking with the output shaft on the DC motor.

[0028] In this embodiment, at least three handle rods 422 are welded to the outer peripheral wall of the transmission ring 42, and these handle rods 422 are operating rods for manually controlling the rotation of the transmission ring 42.

[0029] Working principle: When in use, when it is necessary to replace different DC motors for performance testing, first use a wrench to loosen the locking bolt 6, then insert the output shaft of the DC motor into the space between the three pressure plates 3 in the connecting sleeve 11, and then manually rotate the transmission ring 42 through the handle rod 422. The lead screw 41 rotates and drives the pressure plate 3 to move towards the output shaft of the DC motor by means of screw engagement. When the pressure plate 3 is approximately in a state of squeezing the output shaft of the DC motor, connect the mounting hole on the DC motor and the waist-shaped hole 51 on the swung backing plate 5, and then control the pressure plate 3 to squeeze the output shaft of the DC motor so that the output shaft and the connecting sleeve 11 are in a coaxial state. Finally, tighten the locking bolt 6 and the bolts between the DC motor and the backing plate 5. At this time, the fastening connection between the DC motor and the adapter base 1 is completed. At the same time, due to the action of the support spring 8, one of the channels in the stepped pipe 7 will be docked with the output shaft of the DC motor.

[0030] In addition, it should be understood that although this specification is described according to embodiments, not each embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A DC motor test connecting shaft and adapter plate device, comprising an adapter seat (1) and a coupling (2), characterized in that: The adapter seat (1) is provided with a connecting sleeve (11) and a limiting ring plate (12) and a mounting ring plate (13) respectively located at the front and rear ends of the connecting sleeve (11); three circumferentially evenly distributed and radially slidingly matched pressing plates (3) are arranged inside the connecting sleeve (11); a control assembly (4) for controlling the synchronous movement of the three pressing plates (3) is arranged outside the connecting sleeve (11); the back side of the limiting ring plate (12) is rotatably connected to four axially evenly distributed pads (5) ), a waist-shaped hole (51) is formed through one side of the backing plate (5), and a locking bolt (6) is also formed through one side of the backing plate (5) and is screwed on one end thereof and used in conjunction with the back side of the limiting ring plate (12). One end of the coupling (2) is axially elastically slidably connected to a step tube (7) and the other end is fixedly connected to a flange (21). The small end of the step tube (7) faces the coupling (2) and the inner circumferential wall of the step tube (7) with different apertures is provided with circumferentially uniformly distributed spline grooves (71).

2. A DC motor test connecting shaft and adapter plate device according to claim 1, characterized in that: A guide shaft (31) is welded to one side of the pressure plate (3), and a guide hole (111) which is slidably matched with the guide shaft (31) is formed on the inner peripheral wall of the connecting sleeve (11).

3. A DC motor test connecting shaft and adapter plate device according to claim 2, characterized in that: The control assembly (4) comprises a screw rod (41) and a transmission ring (42); the screw rod (41) penetrates the outer peripheral wall of the connecting sleeve (11) and is rotatably connected; one end of the screw rod (41) is screwed together with one side of the pressure plate (3), and the other end is fixedly connected to a bevel gear (411); the transmission ring (42) is sleeved on the outside of the connecting sleeve (11) and the two are rotatably connected; one side of the transmission ring (42) is fixedly connected to a bevel gear ring (421) meshing with the bevel gear (411).

4. A DC motor test connecting shaft and adapter plate device according to claim 3, characterized in that: At least three handles (422) are welded to the outer peripheral wall of the transmission ring (42).

5. A DC motor test connecting shaft and adapter plate device according to claim 1, characterized in that: A limiting shaft (52) is welded to one side of the pad (5), and a positioning hole (121) rotatably connected to the limiting shaft (52) is penetrated through one side of the limiting ring plate (12).

6. A DC motor test connecting shaft and adapter plate device according to claim 5, characterized in that: The limiting shaft (52) is a T-shaped structure, and the positioning hole (121) is a stepped hole.

7. A DC motor test connecting shaft and adapter plate device according to claim 1, characterized in that: The coupling (2) is sleeved with a support spring (8) located between the step tube (7) and the flange (21).

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