Horizontal type center-adjustable stirring transmission rack

Abstract

The utility model discloses a horizontal type self-aligning stirring transmission rack which comprises a rack body, a driving speed reducer mounting seat, a self-aligning bearing seat, a rack connecting mounting seat, a sealing ring, a transmission shaft, a coupler, a motor and a speed reducer, the self-aligning bearing seat achieves concentricity fine adjustment of the transmission shaft through sliding fit of a wedge-shaped fixing block and the inclined face of a wedge-shaped adjusting pad, the wedge-shaped adjusting pad is driven by a transverse adjusting bolt, and the inclination angle ranges from 30 degrees to 60 degrees. Through the synergistic effect of the self-aligning bearing seat and the coupler, installation errors and radial deviation in operation are effectively compensated, the transmission stability is improved, leakage of media and lubricating grease is prevented through the double-sealing design of the sealing ring and the oil retainer, and the sealing device is suitable for high-precision stirring equipment.

Description

Technical Field

[0001] This utility model relates to the field of mechanical transmission equipment technology, specifically to a horizontal self-aligning stirring transmission frame. Background Technology

[0002] Currently, horizontal mixing equipment generally adopts a fixed bearing housing structure, which has three major technical pain points: First, the installation accuracy requirements are extremely high. Welding deformation or uneven foundation can cause the drive shaft to run eccentrically, reducing the bearing life by more than 30%, and the elastic elements of the coupling are prone to fatigue cracking. Second, existing self-aligning solutions, such as shim adjustment, require machine shutdown and disassembly, which takes more than 2 hours, and the set screw fine adjustment lacks self-locking function. Third, the sealing reliability is poor. Industry data shows that 42% of failures are due to seal failure. The life of a single lip seal is less than 2,000 hours when the shaft is eccentric, and lubricating grease leakage can cause the bearing to seize. Based on this, it is necessary to provide a horizontal self-aligning mixing transmission frame. Summary of the Invention

[0003] To address the existing technical problems, the present invention adopts the following technical solution: a horizontal self-aligning mixing transmission frame, comprising a frame body, a drive reducer mounting base, a self-aligning bearing housing, a frame connecting mounting base, a sealing ring, a transmission shaft, a coupling, a motor, and a reducer; the drive reducer mounting base and the frame connecting mounting base are welded and fixed to the frame body; the reducer is fixed to the drive reducer mounting base by a flange connection; the self-aligning bearing housing is fixed to the frame body by bolts and is located between the drive reducer mounting base and the frame connecting mounting base; the sealing ring is disposed between the transmission shaft and the frame connecting mounting base; the motor and the reducer are connected to the transmission shaft by a coupling; the transmission shaft passes through the self-aligning bearing housing; the central axes of the drive reducer mounting base, the self-aligning bearing housing, the frame connecting mounting base, and the transmission shaft are on the same horizontal line.

[0004] Preferably, the self-aligning bearing housing comprises a bearing, a lock nut, a pressure cap, an oil nozzle, an oil baffle ring, a wedge-shaped fixing block, and a wedge-shaped adjusting shim; there are at least two bearings arranged side by side in the cavity of the self-aligning bearing housing, with pressure caps fixed at both ends; the drive shaft is a solid structure, with a keyway structure at one end and a circular flange structure at the other end, and the drive shaft passes through the inner ring of the bearing from the keyway end and is fixed by the lock nut; the wedge-shaped fixing block is fixed to the base of the self-aligning bearing housing by bolts, and the contact surface between the wedge-shaped adjusting shim and the wedge-shaped fixing block is an inclined surface of 30 to 60 degrees, with both inclined in the same direction; the wedge-shaped adjusting shim is driven by a transverse adjusting bolt and slides along the inclined surface of the wedge-shaped fixing block.

[0005] Preferably, the coupling is a flexible coupling.

[0006] Preferably, the sliding surface of the wedge-shaped adjusting pad is coated with a lubricating coating.

[0007] Preferably, the oil injection nozzle penetrates the outer wall of the self-aligning bearing housing and communicates with the bearing cavity.

[0008] Preferably, the oil baffle ring is located between the bearing and the gland.

[0009] The advantages of this utility model compared with the prior art are:

[0010] Firstly, in this utility model, the self-aligning bearing housing is fixed to the frame body with bolts, and the self-aligning operation can be completed without special tools. Compared with the traditional shim adjustment method, the self-aligning time can be shortened by more than 80%, which greatly improves the installation and maintenance efficiency. Through the inclined surface cooperation structure of the wedge-shaped fixing block and the wedge-shaped adjusting shim, and in conjunction with the transverse adjusting bolt, the concentricity of the drive shaft can be precisely adjusted. The 30° to 60° tilt angle design not only ensures sufficient adjustment stroke, but also has good self-locking performance. After adjustment, the position can be kept stable without additional tightening.

[0011] Secondly, the coupling and the self-aligning bearing housing in this utility model form a collaborative compensation system, which can simultaneously absorb installation deviations and dynamic offsets during operation. This structure increases the bearing life by 40% and extends the service life of the coupling by 60%.

[0012] Thirdly, the horizontal self-aligning stirring transmission frame provided by this utility model can be adapted to various specifications of stirring equipment. By adjusting the inclination angle of the wedge mechanism and the number of bearings, it can meet the application scenarios with different load and precision requirements. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a horizontal self-aligning stirring transmission frame according to the present invention.

[0014] Figure 2 This is a cross-sectional schematic diagram of the self-aligning bearing seat of a horizontal self-aligning stirring transmission frame according to the present invention.

[0015] Figure 3 This is a schematic diagram of the self-aligning bearing seat structure of a horizontal self-aligning stirring transmission frame according to the present invention.

[0016] In the diagram: 1. Frame body; 2. Drive reducer mounting base; 3. Self-aligning bearing housing; 4. Frame connection mounting base; 5. Sealing ring; 6. Drive shaft; 7. Coupling; 8. Motor; 9. Reducer; 31. Bearing; 32. Lock nut; 33. Pressure cap; 34. Oil nozzle; 35. Oil baffle ring; 36. Wedge-shaped fixing block; 37. Wedge-shaped adjusting shim. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustration and description purposes only, and are not intended to be exhaustive or to limit the present invention to the forms disclosed.

[0018] Please see Figure 1 A horizontal self-aligning mixing transmission frame includes a frame body 1, a drive reducer mounting base 2, a self-aligning bearing seat 3, a frame connecting mounting base 4, a sealing ring 5, a transmission shaft 6, a coupling 7, a motor 8, and a reducer 9. The drive reducer mounting base 2 and the frame connecting mounting base 4 are welded and fixed to the frame body 1. The reducer 9 is fixed to the drive reducer mounting base 2 by a flange connection. The self-aligning bearing seat 3 is fixed to the frame body 1 by bolts and is located between the drive reducer mounting base 2 and the frame connecting mounting base 4. The sealing ring 5 is disposed between the transmission shaft 6 and the frame connecting mounting base 4. The motor 8 and the reducer 9 are connected to the transmission shaft 6 by the coupling 7. The transmission shaft 6 passes through the self-aligning bearing seat 3. The central axes of the drive reducer mounting base 2, the self-aligning bearing seat 3, the frame connecting mounting base 4, and the transmission shaft 6 are on the same horizontal line. The self-aligning bearing seat 3 achieves fine adjustment of the concentricity of the transmission shaft 6 through a wedge-shaped adjustment structure.

[0019] Combine Figure 2 as well as Figure 3 The self-aligning bearing housing 3 consists of bearings 31, lock nuts 32, pressure caps 33, grease nipples 34, oil baffle rings 35, wedge-shaped fixing blocks 36, and wedge-shaped adjusting shims 37. At least two bearings 31 are arranged side-by-side in the cavity of the self-aligning bearing housing 3, with pressure caps 33 fixed at both ends. The drive shaft 6 is a solid structure, with a keyway at one end and a circular flange at the other. The drive shaft 6 passes through the inner ring of the bearing 31 from the keyway end and is fixed by the lock nuts 32. The wedge-shaped fixing blocks 36 are fixed to the base of the self-aligning bearing housing 3 by bolts. The contact surface between the wedge-shaped adjusting shims 37 and the wedge-shaped fixing blocks 36 is an inclined surface of 30 to 60 degrees, with both inclined in the same direction. The wedge-shaped adjusting shims 37 are driven by lateral adjusting bolts and slide along the inclined surface of the wedge-shaped fixing blocks 36 to achieve concentricity adjustment of the drive shaft 6.

[0020] The drive shaft 6 passes through the keyway end into the inner ring of the bearing 31 and is fixed by the lock nut 32.

[0021] To further improve the stability of the device, the following features are specifically provided: the coupling 7 adopts a flexible coupling, which can compensate for the radial deviation between the transmission shaft 6 and the output shaft of the reducer 9 and reduce vibration.

[0022] The sliding surface of the wedge-shaped adjusting pad 37 is coated with a polytetrafluoroethylene lubricating coating to reduce frictional resistance and make the adjustment smoother.

[0023] The grease nipple 34 penetrates the outer wall of the self-aligning bearing housing 3 and communicates with the cavity of the bearing 31, facilitating the periodic addition of grease.

[0024] The oil baffle ring 35 is located between the bearing 31 and the gland 33, effectively preventing lubricating grease leakage.

[0025] The working principle of this device is as follows: During installation, the drive shaft 6 is first inserted into the self-aligning bearing seat 3 and fixed by the lock nut 32. If a concentricity deviation is detected, the position of the wedge adjusting shim 37 can be adjusted to make the bearing seat move slightly until the drive shaft 6 and the output shaft of the reducer 9 reach the ideal alignment state. After the adjustment is completed, the bolts are tightened to ensure the stability of the structure.

[0026] Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A horizontal self-aligning stirring transmission frame, comprising a frame body (1), a drive reducer mounting base (2), a self-aligning bearing seat (3), a frame connecting mounting base (4), a sealing ring (5), a drive shaft (6), a coupling (7), a motor (8), and a reducer (9), characterized in that: The drive reducer mounting base (2) and the frame connecting mounting base (4) are welded and fixed to the frame body (1); the reducer (9) is fixed to the drive reducer mounting base (2) by flange connection; the self-aligning bearing seat (3) is fixed to the frame body (1) by bolts and is located between the drive reducer mounting base (2) and the frame connecting mounting base (4); the sealing ring (5) is set between the transmission shaft (6) and the frame connecting mounting base (4); the motor (8) and the reducer (9) are connected to the transmission shaft (6) by coupling (7); the transmission shaft (6) passes through the self-aligning bearing seat (3); the central axes of the drive reducer mounting base (2), the self-aligning bearing seat (3), the frame connecting mounting base (4) and the transmission shaft (6) are on the same horizontal line.

2. The horizontal self-aligning stirring transmission frame according to claim 1, characterized in that: The self-aligning bearing housing (3) consists of a bearing (31), a lock nut (32), a pressure cap (33), an oil nozzle (34), an oil baffle ring (35), a wedge-shaped fixing block (36), and a wedge-shaped adjusting pad (37). There are at least two bearings (31), which are arranged side by side in the cavity of the self-aligning bearing housing (3), and pressure caps (33) are fixed at both ends. The drive shaft (6) is a solid structure with a keyway structure at one end and a circular flange structure at the other end. The drive shaft (6) passes through the inner ring of the bearing (31) from the keyway end and is fixed by the lock nut (32). The wedge-shaped fixing block (36) is fixed to the base of the self-aligning bearing housing (3) by bolts. The contact surface between the wedge-shaped adjusting pad (37) and the wedge-shaped fixing block (36) is an inclined surface of 30 to 60 degrees, and the inclination directions of the two are consistent. The wedge-shaped adjusting pad (37) is driven by a transverse adjusting bolt and slides along the inclined surface of the wedge-shaped fixing block (36).

3. The horizontal self-aligning stirring transmission frame according to claim 1, characterized in that: The coupling (7) is a flexible coupling.

4. The horizontal self-aligning stirring transmission frame according to claim 2, characterized in that: The sliding surface of the wedge-shaped adjusting pad (37) is coated with a lubricating coating.

5. The horizontal self-aligning stirring transmission frame according to claim 2, characterized in that: The oil injection nozzle (34) penetrates the outer wall of the self-aligning bearing housing (3) and communicates with the cavity of the bearing (31).

6. The horizontal self-aligning stirring transmission frame according to claim 2, characterized in that: The oil baffle ring (35) is located between the bearing (31) and the gland (33).

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