Fixing structure of output shaft of large eccentric polishing machine

Abstract

The fixing structure of the output shaft of the large eccentric polishing machine comprises an eccentric block, the output shaft is arranged in the center of the interior of the eccentric block, a balancing weight is arranged on the edge of the upper end of the eccentric block, a limiting step is arranged at the bottom of the output shaft, two bearings are arranged on the periphery of the output shaft, and a pipe body of the output shaft is sleeved with the bearings. The bearing is pressed on the limiting step, the top of the output shaft is sleeved with a fixing block, the bottom of the fixing block makes contact with an inner ring of the bearing, and the edge, close to the eccentric block side, of the balancing weight makes contact with an outer ring of the bearing. According to the fixing structure of the output shaft of the large eccentric polishing machine, the inner ring of the bearing is fixed through the fixing block, the outer ring of the bearing is fixed through the balancing weight, so that the bearing is firmly fixed into the eccentric block, the bearing fixes the limiting step of the output shaft to the bottom of the eccentric block, and therefore the output shaft is fixed into the eccentric block; therefore, the output shaft is prevented from falling off in the rotating process of the machine.

Description

Technical Field

[0001] The utility model relates to a fixing structure for an output shaft of a large eccentric polishing machine. Background Art

[0002] An eccentric polishing machine is a commonly used polishing tool. Using the principle of the rotation of an eccentric rotor, the polishing disc rotates at a certain speed and frequency, and the workpiece is polished by various factors such as centrifugal force and gravity. At present, the output shaft of the eccentric polishing machine is fixed by a circlip limit or welding on the bearing. After long-term use of the polishing machine, the output shaft may become loose or even fall off, posing a great potential safety hazard. Summary of the Utility Model

[0003] The utility model provides a fixing structure for an output shaft of a large eccentric polishing machine.

[0004] The technical solution adopted by the utility model to solve the above technical problems is as follows:

[0005] A fixing structure for an output shaft of a large eccentric polishing machine, including an eccentric block. An output shaft is arranged at the center of the interior of the eccentric block. A counterweight block is arranged at the upper edge of the eccentric block. A limiting step is arranged at the bottom of the output shaft. Two bearings are arranged around the output shaft. The bearings are sleeved on the tube body of the output shaft, and the bearings are pressed on the limiting step. A fixing block is sleeved on the top of the output shaft. The bottom of the fixing block is in contact with the inner ring of the bearing. The edge of the counterweight block close to the eccentric block side is in contact with the outer ring of the bearing.

[0006] Preferably, the eccentric block is a large ring body with a bottom end. A through connection hole is arranged at the bottom edge of the eccentric block. The axis of the connection hole is not on the same straight line as the axis of the eccentric block.

[0007] Preferably, the output shaft is a hollow tubular structure, and threads are arranged inside the output shaft.

[0008] Preferably, the bearing is a ring body.

[0009] Preferably, the counterweight block and the connection hole are on the same side of the eccentric block.

[0010] Preferably, a through hole is arranged at the edge of the counterweight block, and the counterweight block is connected to the eccentric block by a screw passing through the through hole.

[0011] Preferably, a gasket is arranged between the screw and the counterweight block.

[0012] Compared with the prior art, the utility model provides a fixing structure for the output shaft of a large eccentric polishing machine, in which the inner ring of the bearing is fixed by a fixing block, and the outer ring of the bearing is fixed by a counterweight block, thereby firmly fixing the bearing inside the eccentric block, and the bearing fixes the limiting step of the output shaft at the bottom of the eccentric block, thereby fixing the output shaft inside the eccentric block, thereby preventing the output shaft from falling off during the rotation of the machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional schematic diagram of the fixing structure of the output shaft of a large eccentric polishing machine of the utility model.

[0014] Figure 2 The utility model is an exploded schematic diagram of a fixing structure of an output shaft of a large eccentric polishing machine.

[0015] Figure 3 The utility model is a cross-sectional view of a fixing structure of an output shaft of a large eccentric polishing machine. DETAILED DESCRIPTION

[0016] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0017] like Figures 1 to 3 As shown, a fixing structure of the output shaft of a large eccentric polishing machine includes an eccentric block 1, which is a large annular body with a bottom end. A penetrating connecting hole 11 is provided at the bottom edge of the eccentric block 1, and the connecting hole 11 is cooperatively connected with the driving shaft of the motor. The axis of the connecting hole 11 is not in a straight line with the axis of the eccentric block 1, so centrifugal force will be generated when the eccentric block 1 rotates. An output shaft 2 is arranged at the inner center of the eccentric block 1. The output shaft 2 is a hollow tubular structure. A thread is arranged inside the output shaft 2 for connecting the polishing disk. A limiting step 21 is arranged at the bottom of the output shaft 2. Two bearings 3 are arranged around the output shaft 2. The bearings 3 are annular bodies. The bearings 3 are sleeved on the tube body of the output shaft 2. The bearings 3 are pressed on the limiting step 21. A fixing block 4 is sleeved on the top of the output shaft 2. The bottom of the fixing block 4 contacts with the inner ring of the bearing 3, thereby fixing the inner ring of the bearing 3. The bearing 3 presses the limiting step 21 of the output shaft 2 to fix the output shaft 2 in the eccentric block 1.

[0018] A counterweight 5 is arranged at the upper edge of the eccentric block 1. The counterweight 5 and the connecting hole 11 are on the same side of the eccentric block 1. A through hole 51 is arranged at the edge of the counterweight 5. The counterweight 5 is connected to the eccentric block 1 by screws 6 passing through the through hole 51. The edge of the counterweight 5 close to the eccentric block 1 is in contact with the outer ring of the bearing 3, which plays a role in fixing the outer ring of the bearing 3. A gasket 7 is arranged between the screw 6 and the counterweight 5. The counterweight 5 can adjust the machine to a balanced state by adding weight to the machine, so as to minimize the vibration and noise caused by the machine when running at high speed; the gasket 7 can alleviate the vibration between the screw 6 and the counterweight 5, and reduce the risk of the screw 6 detaching from the counterweight 5.

[0019] The utility model discloses a fixing structure of the output shaft of a large eccentric polishing machine. The inner ring of a bearing 3 is fixed by a fixing block 4, and the outer ring of the bearing 3 is fixed by a counterweight block 5, so that the bearing 3 is firmly fixed inside an eccentric block 1. The bearing 3 fixes a limiting step 21 of an output shaft 2 at the bottom of the eccentric block 1, so that the output shaft 2 is fixed inside the eccentric block 1, thereby preventing the output shaft 2 from falling off during the rotation of the machine.

[0020] Finally, it should be noted that the above embodiments only illustrate the technical solutions of the present invention, rather than limiting it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A fixing structure for an output shaft of a large eccentric polishing machine, comprising an eccentric block (1), an output shaft (2) being arranged at the inner center of the eccentric block (1), and a counterweight block (5) being arranged at the upper edge of the eccentric block (1). It is characterized in that A limiting step (21) is arranged at the bottom of the output shaft (2), two bearings (3) are arranged around the output shaft (2), the bearings (3) are sleeved on the tubular body of the output shaft (2), the bearings (3) are pressed on the limiting step (21), a fixing block (4) is sleeved on the top of the output shaft (2), the bottom of the fixing block (4) is in contact with the inner ring of the bearing (3), and the edge of the counterweight block (5) close to the eccentric block (1) is in contact with the outer ring of the bearing (3).

2. A fixing structure for the output shaft of a large eccentric polishing machine according to claim 1, It is characterized in that The eccentric block (1) is a large annular body with a bottom end. A penetrating connection hole (11) is provided at the edge of the bottom end of the eccentric block (1). The axis of the connection hole (11) is not in a straight line with the axis of the eccentric block (1).

3. The fixing structure of the output shaft of a large eccentric polishing machine according to claim 1, It is characterized in that The output shaft (2) is a hollow tubular structure, and a thread is provided inside the output shaft (2).

4. The fixing structure of the output shaft of a large eccentric polishing machine according to claim 1, It is characterized in that The bearing (3) is a toroidal body.

5. The fixing structure of the output shaft of a large eccentric polishing machine according to claim 2, It is characterized in that The counterweight block (5) and the connecting hole (11) are on the same side of the eccentric block (1).

6. The fixing structure of the output shaft of a large eccentric polishing machine according to claim 1, It is characterized in that A through hole (51) is provided on the edge of the counterweight block (5), and the counterweight block (5) is connected to the eccentric block (1) by means of screws (6) passing through the through hole (51).

7. A fixing structure for the output shaft of a large eccentric polishing machine according to claim 6, It is characterized in that A gasket (7) is provided between the screw (6) and the counterweight (5).

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