Motor shaft end rotary encoder connecting device easy to center
By designing the adjustment plate and fan cover, combined with the adjustment hole and bolt structure, precise alignment between the rotary encoder and the motor is achieved, solving the alignment problem, reducing the failure rate, and extending the equipment life.
Patent Information
- Application Number
- CN202422539608.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-21
- Publication Date
- 2025-10-24
- Estimated Expiration
- 2034-10-21
AI Technical Summary
In existing technologies, it is difficult to achieve alignment between the rotary encoder and the motor, resulting in a high frequency of coupling damage and affecting the smooth progress of production.
The structure employs an adjustment plate, fan cover, and multiple adjustment holes. The rotary encoder and motor are precisely aligned through the adjustment holes, pressure plate, and bolts on the adjustment plate. Adjustment shims and spring washers are used to ensure alignment accuracy.
It achieves precise alignment of the rotary encoder, reduces the failure rate, ensures stable operation of the equipment, extends its service life, and saves on spare parts costs.
Smart Images
Figure CN223472156U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a motor shaft end rotary encoder connecting device, can realize the accurate centering of the shaft coupling between rotary encoder and motor, belong to measuring device technical field. BACKGROUND
[0002] Rotary encoder is used to measure the device of rotating speed, can the angular displacement, angular velocity etc.
[0003] Rotary encoder is often used to measure the rotating speed of motor, and is matched with PWM technology to realize the quick speed regulation of motor. Utility model content
[0004] The utility model discloses a motor shaft end rotary encoder connecting device that is easy to center, to realize the accurate centering of the shaft coupling between rotary encoder and motor, reduce the rotary encoder failure rate, guarantee the smooth progress of production.
[0005] To realize above-mentioned purpose, the utility model adopts following technical scheme:
[0006] A motor shaft end rotary encoder connecting device that is easy to center, including adjusting plate and fan cover, the fan cover cover is in the outside of motor rear shaft end fan and is connected fixedly with motor, the adjusting plate is in the rear end of fan cover, and the rotary encoder is located in the rear of adjusting plate and is connected fixedly with adjusting plate, and the input shaft of rotary encoder passes through the center hole on the rear wall of adjusting plate and fan cover and is connected with the rear shaft end of motor through the shaft coupling, is equipped with the adjusting hole that distributes around the center hole on adjusting plate, and is equipped with the pressing plate, rear fixed bolt and nut of each adjusting hole, and the diameter of adjusting hole is less than the diameter of pressing plate and is greater than the diameter of rear fixed bolt, and the rear fixed bolt passes through rear fixed hole on the rear wall of fan cover, adjusting hole and the center hole of pressing plate in proper order and is screwed into nut.
[0007] The adjusting gasket is equipped between the adjusting plate and the rear wall of fan cover of the motor shaft end rotary encoder connecting device that is easy to center.
[0008] The adjusting plate is fixedly connected with the rotary encoder through a plurality of fixing screws distributed around the central hole of the adjusting plate, the fixing screws are internal hexagonal screws, and a connecting hole matched with each fixing screw is arranged on the adjusting plate.
[0009] The fan cover is cylindrical, and a working hole is formed in the cylindrical surface of the fan cover.
[0010] The front wall of the fan cover is fixedly connected with the motor through a plurality of front fixing bolts, the front fixing bolts pass through front fixing holes in the front wall of the fan cover and are screwed into threaded holes in the rear part of the motor.
[0011] The front fixing bolts and the front wall of the fan cover are provided with front spring washers, and the nut and the pressing plate and the nut are provided with rear spring washers.
[0012] The adjusting holes on the adjusting plate are provided with three adjusting holes, and the connecting holes on the adjusting plate are provided with six connecting holes.
[0013] The adjusting holes on the adjusting plate and the pressing plate, the nut, the pressing plate and the rear fixing bolt are arranged on the adjusting plate, the relative position of the rotary encoder and the motor is adjusted, the accurate centering of the rotary encoder can be realized, the stable operation of the rotary encoder is ensured, the failure rate of the rotary encoder is reduced, and the smooth production is ensured. BRIEF DESCRIPTION OF DRAWINGS
[0014] The utility model makes further detailed description in combination with the drawings and specific embodiment.
[0015] Figure 1 It is the assembly schematic view of each component of the utility model;
[0016] Figure 2 It is the state schematic view after the utility model is assembled;
[0017] Figure 3 It is the structure schematic view of adjustable bottom plate, wherein Figure 3 (a) is the front view (cross-sectional view); Figure 3 (b) is the left view;
[0018] Figure 4 It is the structure schematic view of fan cover, wherein Figure 4 (a) is the left view; Figure 4 (b) is the front view; Figure 4 (c) is the right view;
[0019] Figure 5 is a schematic diagram of position adjustment of the adjusting plate relative to the fan cover, wherein Figure 5 (a) is a state before adjustment; Figure 5 (b) is a state after adjustment.
[0020] The reference numerals in the drawing are as follows: 1, a rotary encoder; 2, an adjusting plate; 2-1, a center hole; 2-2, an adjusting hole; 2-3, a connecting hole; 3, an adjusting washer; 4, a fan cover; 4-1, a rear fixing hole; 4-2, a front fixing hole; 4-3, a working hole; 5, a motor; 6, a fixing screw; 7, a front fixing bolt; 8, a front spring washer; 9, a nut; 10, a rear spring washer; 11, a pressing plate; 12, a rear fixing bolt; 13, a coupling; and 14, a fan. DETAILED DESCRIPTION
[0021] Referring to Figures 1-5 , the utility model mainly includes an adjusting plate 2, an adjusting washer 3, a fan cover 4, a fixing screw 6, a front fixing bolt 7, a front spring washer 8, a nut 9, a rear spring washer 10, a pressing plate 11, a rear fixing bolt 12, and a coupling 13.
[0022] As shown in Figure 1 , the motor 5 belongs to an electrical driving device, a non-driving end of the motor 5, i.e. a rear part, is provided with a fan 14, the fan cover 4 is cylindrical, is a protective device of the fan 14 at the rear part of the motor 5, the fan cover 4 covers the outside of the fan 14 and is fixed to the motor 5 through the front fixing bolt 7. A working hole 4-3 is formed in the cylindrical surface of the fan cover 4, so as to facilitate an installer to install and check the coupling 13, the fan 14 and other parts.
[0023] The rotary encoder 1 is a component for measuring the rotating speed of the motor, and is fixed on the fan cover 4 through the adjusting plate 2, the adjusting washer 3, the fixing screw 6, the nut 9, the rear spring washer 10, the pressing plate 11 and the rear fixing bolt 12. The input shaft of the rotary encoder 1 is connected with the rear shaft end of the motor 5 through the coupling 13, and can rotate synchronously with the rotating shaft of the motor 5. The adjusting plate 2 is used for mounting the rotary encoder 1, and has three adjusting holes 2-2 on the surface thereof, which are uniformly distributed around the center hole 2-1 of the adjusting plate 2. The diameter of the adjusting hole 2-2 is larger than that of the rear fixing bolt 12, and the axis of the adjusting hole 2-2 can rotate 360° around the axis of the rear fixing bolt 12 after the rear fixing bolt 12 is inserted into the adjusting hole 2-2. The adjusting plate 2 can move radially relative to the rear fixing bolt 12. The adjusting washer 3 is arranged between the adjusting plate 2 and the fan cover 4, and is used for adjusting the axial distance between the adjusting plate 2 and the fan cover 4, so as to realize the axial adjustment. The adjusting plate 2 is provided with six connecting holes 2-3 matched with the fixing screw 6, which are uniformly distributed around the center hole 2-1 of the adjusting plate 2. The distance from the connecting hole 2-3 to the center hole 2-1 is smaller than that from the adjusting hole 2-2 to the center hole 2-1. The fixing screw 6 is inserted into the connecting hole 2-3 on the adjusting plate 2 and is screwed into the threaded hole of the rotary encoder 1, so as to fix the adjusting plate 2 and the rotary encoder 1 together. The fixing screw 6 is a hexagonal socket head cap screw, the connecting hole 2-3 is a stepped hole, and the screw shank of the fixing screw 6 is located in the stepped hole. The front fixing bolt 7 and the front spring washer 8 are used in combination to fix the fan cover 4 to the motor 5. The nut 9 and the rear spring washer 10 are used in combination with the rear fixing bolt 12 to tightly fix the pressing plate 11 to the adjusting plate 2. The front spring washer 8 and the rear spring washer 10 play a role of anti-loosening.
[0024] As shown in Figure 2 , one end of the coupling 13 is connected with the motor shaft end, and the other end is connected with the input shaft of the rotary encoder 1, so as to connect the input shaft of the rotary encoder 1 and the rotating shaft of the motor 5, and realize synchronous rotation.
[0025] As shown in Figure 4 , the rear end of the fan cover 4 is provided with three rear fixing holes 4-1, which are uniformly distributed around the axis of the fan cover 4. The diameter of the rear fixing hole 4-1 is smaller than that of the adjusting hole 2-2 and is matched with the diameter of the rear fixing bolt 12, so that the rear fixing bolt 12 can be smoothly inserted into the rear fixing hole 4-1. The front end of the fan cover 4 is provided with four front fixing holes 4-2 matched with the front fixing bolt 7, which are uniformly distributed around the axis of the fan cover 4. The front fixing bolt 7 is inserted into the front fixing hole 4-2 and is screwed into the threaded hole at the rear of the motor 5, so as to fix the fan cover 4 to the motor 5.
[0026] As shown in Figure 5As shown, the pressure plate 11 is a circular plate with a center hole, the diameter of which matches the rear fixing bolt 12, and the rear fixing bolt 12 can pass through smoothly. The diameter of the pressure plate 11 is larger than the diameter of the adjustment hole 2-2 on the adjustment plate 2 ( Figure 5 The dashed line in the middle represents the adjustment hole 2-2. The pressure plate 11 and rear fixing bolt 12 are always coaxial. After the fan cover 4 is fixed to the motor 5, the relative positions of the pressure plate 11, rear fixing bolt 12, and motor 5 remain fixed. The relative positions of the adjustment plate 2 and rotary encoder 1 are also fixed. Ideally, after the rotary encoder 1, adjustment plate 2, adjustment shim 3, fan cover 4, and motor 5 are connected, and the ends of the coupling 13 are respectively connected to the motor shaft end and the input shaft of the rotary encoder 1, the three rear fixing bolts 12 and the three pressure plates 11 are exactly coaxial with the three adjustment holes 2-2, as shown in FIG. Figure 5 As shown in (a), in this case, the pressure plate 11 can be made into an integral structure with the adjustment plate 2, that is, there is no need to make a separate pressure plate 11. However, in most cases, due to component processing errors, deformation, etc., if the three rear fixing bolts 12 and the three pressure plates 11 are coaxial with the three adjustment holes 2-2, the motor shaft and the input shaft of the rotary encoder 1 will not be coaxial, resulting in the inability to connect the coupling 13. The present invention effectively solves the problem of difficult alignment and installation of the coupling 13 by providing the adjustment plate 2, the adjustment holes 2-2, and the pressure plate 11. When the coaxiality of the three rear fixing bolts 12 and the three pressure plates 11 with the three adjustment holes 2-2 cannot make the motor shaft coaxial with the input shaft of the rotary encoder 1, the motor shaft and the input shaft of the rotary encoder 1 can be made coaxial by simply adjusting the position of the rear fixing bolts 12 in the adjustment holes 2-2. Then, the adjustment plate 2, the pressure plate 11, and the fan cover 4 are locked using the nut 9, the rear spring washer 10, and the rear fixing bolts 12, thereby achieving precise alignment of the coupling between the rotary encoder and the motor.
[0027] When using, first install one end of the coupling 13 to the shaft end of the motor 5, and then fix the fan cover 4 to the motor 5 with the front fixing bolt 7. Then install the other end of the coupling 13 to the output shaft of the rotary encoder 1, fix the rotary encoder 1 to the adjustment plate 2 with the fixing screw 6, and then place the adjustment plate 2 on the fan cover 4 with the rear fixing bolt 12, and at the same time place the adjustment gasket 3 between the adjustment plate 2 and the fan cover 4. Bring the nut 9, rear spring washer 10, and pressure plate 11 onto the rear fixing bolt 12, but do not tighten it. Adjust the coaxiality of the motor 5 and the rotary encoder 1 by moving the adjustment plate 2, and adjust the axial displacement of the rotary encoder 1 by changing the thickness of the adjustment gasket 3. When the motor 5 is coaxial with the input shaft of the rotary encoder 1, tighten the nut 9, and connect the rotary encoder 1, adjustment plate 2, adjustment gasket 3, fan cover 4 and motor 5 together to complete the alignment and installation of the coupling (13).
[0028] The above technical solution has the beneficial effects of:
[0029] The utility model discloses can realize accurate centering of rotary encoder, guarantee rotary encoder steady operation, reduce equipment failure, prolong equipment life, and save spare parts cost.
Claims
1. A motor shaft end rotary encoder connection device that is easy to center, characterized by, The adjusting plate (2) and the fan cover (4), the fan cover (4) covers the outside of the motor (5) rear shaft end fan (14) and is fixedly connected with the motor (5), the adjusting plate (2) is located on the rear end of the fan cover (4), the rotary encoder (1) is located on the rear of the adjusting plate (2) and is fixedly connected with the adjusting plate (2), the input shaft of the rotary encoder (1) passes through the center hole on the rear wall of the adjusting plate and the fan cover (4) and is connected with the rear shaft end of the motor (5) through the shaft coupling (13), a plurality of adjusting holes (2-2) distributed around the center hole are arranged on the adjusting plate (2), each adjusting hole (2-2) is provided with a pressing plate (11), a rear fixed bolt (12) and a nut (9), the diameter of the adjusting hole (2-2) is smaller than the diameter of the pressing plate (11) and larger than the diameter of the rear fixed bolt (12), the rear fixed bolt (12) passes through the rear fixed hole (4-1) on the rear wall of the fan cover (4), the adjusting hole (2-2) and the center hole of the pressing plate (11) in sequence and is screwed into the nut (9).
2. A motor shaft end rotary encoder coupling arrangement which is self centering according to claim 1, characterized in that, The adjusting gasket (3) is arranged between the adjusting plate (2) and the rear wall of the fan cover (4).
3. A motor shaft end rotary encoder connection arrangement which is easy to center according to claim 1 or 2, characterized in that The adjusting plate (2) is fixedly connected with the rotary encoder (1) through a plurality of fixed screws (6) distributed around the center hole, the fixed screw (6) is a hexagonal socket head cap screw, a connecting hole (2-3) matched with each fixed screw (6) is arranged on the adjusting plate (2), the connecting hole (2-3) is a stepped hole, and the screw head of the fixed screw (6) is located in the stepped hole.
4. A motor shaft end rotary encoder coupling arrangement readily centered according to claim 3, characterized in that, The fan cover (4) is cylindrical, and a working hole (4-3) is formed in the cylindrical surface of the fan cover (4).
5. A motor shaft end rotary encoder coupling arrangement readily centered according to claim 4, characterized in that, The front wall of the fan cover (4) is fixedly connected with the motor (5) through a plurality of front fixed bolts (7), the front fixed bolt (7) passes through the front fixed hole (4-2) on the front wall of the fan cover (4) and is screwed into the threaded hole in the rear of the motor (5).
6. A motor shaft end rotary encoder coupling arrangement readily centered according to claim 5, characterized in that, The front spring washer (8) is arranged between the front fixed bolt (7) and the front wall of the fan cover (4); the rear spring washer (10) is arranged between the nut (9) and the pressing plate (11).
7. A motor shaft end rotary encoder coupling arrangement readily centred according to claim 6, characterised in that, Three adjusting holes (2-2) are arranged on the adjusting plate (2); six connecting holes (2-3) are arranged on the adjusting plate (2).