Multipurpose thin oil vibration exciter

Abstract

The utility model provides a multipurpose thin oil vibration exciter, and belongs to the technical field of vibration exciters. The multipurpose thin oil vibration exciter comprises a vibration exciter structure and a driving structure. The vibration exciter structure comprises a bearing cavity, an outer taper sleeve and a shaft rod, the bearing cavity is installed on the outer taper sleeve through a connecting piece, two cylindrical roller bearings are further connected to the shaft rod in an interference fit mode, and the one-way thrust ball bearing, the two cylindrical roller bearings and the blades are located in the bearing cavity. And the blades are positioned between the two cylindrical roller bearings. The driving structure comprises a driving motor and an eccentric block, and an auxiliary eccentric block is fixed to the surface of the eccentric block. According to the utility model, oil in the oil cavity is in a suspended rolling state by utilizing mutual matching of the blades without increasing other power, a flowing oil film is formed on the surface of the bearing, the lubricating effect and the cooling effect can be achieved, and meanwhile, the sealing mode is changed, so that the failure rate is reduced, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of vibrators, in particular to a multi-purpose thin oil vibrator. Background Art

[0002] A vibration exciter is a device attached to certain machines and equipment to generate excitation force. It is an important component for utilizing mechanical vibration. The exciter can make the excited object obtain a certain form and magnitude of vibration, so as to conduct vibration and strength tests on the object, or calibrate vibration test instruments and sensors. The exciter can also be used as an excitation component to form a vibration machine to achieve the conveying and screening of materials or objects.

[0003] The vibrator is the core component that provides centrifugal force to drive the swing screen to vibrate, and is the core device of the equipment. With the modernization and intelligent development of enterprises and the increase in labor costs, the only way to fundamentally reduce costs is to work hard on the service life and maintenance costs of various equipment. Previously, the vibrators used in equipment, especially swing screens, were mostly solid oil lubricated or lubrication-free, and single or double bearings were lubricated with grease. The disadvantage of this structure is that the lubricating oil needs to be replaced frequently, the sealing effect is poor, and oil leakage is prone to occur, resulting in a high failure rate of the vibrator, and the equipment cannot be used normally and has to be shut down. At the same time, it is not convenient for cooling and heat dissipation, which affects the service life of the bearings and directly causes losses to the company. Utility Model Content

[0004] In order to make up for the above deficiencies, the utility model provides a multi-purpose thin oil vibrator, which aims to improve the grease lubrication structure. The disadvantage of this structure is that the lubricating oil needs to be replaced frequently, the sealing effect is poor, and oil leakage is prone to occur, resulting in a high failure rate of the vibrator, and the equipment cannot be used normally and is shut down. At the same time, it is not convenient for cooling and heat dissipation, which affects the service life of the bearing, directly causing losses to the enterprise.

[0005] The utility model is achieved in this way:

[0006] The utility model provides a multi-purpose thin oil vibrator, which comprises a vibrator structure and a driving structure.

[0007] The exciter structure includes a bearing cavity, an outer tapered sleeve and a shaft rod. The bearing cavity is installed on the outer tapered sleeve through a connecting piece. An oil cavity is formed inside the bearing cavity. The lower end cover and the upper end cover are installed at both ends of the bearing cavity by bolts. One end of the shaft rod is interference-connected with a one-way thrust ball bearing. Two cylindrical roller bearings are also interference-connected on the shaft rod. A blade is fixed on the shaft rod. The one-way thrust ball bearing, the two cylindrical roller bearings and the blade are located inside the bearing cavity. The blade is located between the two cylindrical roller bearings. One end of the shaft rod passes through the upper end cover and extends to the outside. The driving structure includes a driving motor and an eccentric block. The driving motor and the shaft rod are connected by a transmission member. The eccentric block is key-connected to the shaft rod. An auxiliary eccentric block is fixed on the surface of the eccentric block.

[0008] In an embodiment of the utility model, the connecting member includes a connecting bolt and a nut, the connecting bolt passes through the outer cone sleeve and the connecting ears on the bearing cavity, and the end of the connecting bolt is threadedly connected with a nut.

[0009] In an embodiment of the utility model, an O-ring is provided between the lower end cover and the bearing cavity, and an oil seal is provided between the upper end cover and the shaft rod.

[0010] In an embodiment of the utility model, an oil tank is fixed on the lower end cover, the oil tank is communicated with the oil cavity, and an oil level control component is connected to the oil tank.

[0011] In one embodiment of the utility model, the oil level control component includes an oil level gauge and an oil pipe, the oil level gauge is connected to the oil pipe, the oil pipe is connected to the oil tank, and an oil upper line and an oil lower line are formed on the bearing cavity.

[0012] In one embodiment of the utility model, a lower spacer ring is provided at the lower end of the interior of the bearing cavity, and the lower spacer ring is located between the lower end cover and the cylindrical roller bearing. An intermediate spacer ring is provided inside the bearing cavity, and the intermediate spacer ring is located between the two cylindrical roller bearings.

[0013] In one embodiment of the utility model, the transmission member includes a driven pulley and a driving pulley, the driven pulley key is connected to the end of the shaft, the driving pulley key is connected to the end of the output shaft of the drive motor, and the driving pulley and the driven pulley are connected by a transmission belt.

[0014] In an embodiment of the utility model, a pressure cover is installed on the driven pulley through bolts, and a muffler is installed on the pressure cover.

[0015] The beneficial effects of the utility model are as follows: the utility model is a multi-purpose thin oil vibrator obtained by the above design. When in use, the driving motor drives the driven pulley to rotate through the transmission belt, and the rotation of the driven pulley drives the shaft rod, the eccentric block and the auxiliary eccentric block to rotate. During the rotation of the shaft rod, the axial force is borne by the one-way thrust ball bearing, and the two cylindrical roller bearings bear the radial force to assist in bearing the axial force. The oil in the oil cavity inside the bearing cavity is thrown upward by the rotation of the blade, and an oil film is always suspended on the one-way thrust ball bearing and the two cylindrical roller bearings, so that the bearing is better. Good lubrication can lubricate on the one hand and cool down on the other hand. The air cooling of the blades plus the thin oil cooling ensure that the bearing temperature is always kept within the allowable range. The excess heat in the oil chamber can be discharged through the muffler and the overflow hole on the shaft. In this way, when in use, the radial force is borne by the one-way thrust ball bearing and the cylindrical roller bearing to assist in bearing the axial force. Without adding other power, the blades cooperate with each other to make the oil in the oil chamber suspended and tumbling, forming a flowing oil film on the bearing surface, which can not only lubricate but also cool down. At the same time, changing the sealing method is beneficial to reduce the failure rate and increase the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the structure of a multi-purpose thin oil exciter provided by an embodiment of the utility model;

[0018] Figure 2 A schematic diagram of the cross-sectional structure of a multi-purpose thin oil exciter provided in an embodiment of the utility model;

[0019] Figure 3 For this utility model Figure 2 Enlarged view of point A in the middle.

[0020] In the figure: 100-exciter structure; 110-bearing cavity; 111-upper oil line; 112-lower oil line; 120-outer cone sleeve; 130-connector; 131-connecting bolt; 132-nut; 140-lower end cover; 141-O-ring; 142-oil tank; 150-upper end cover; 151-oil seal; 160-shaft rod; 161-one-way thrust ball bearing; 162-cylindrical roller bearing; 16 3-blade; 164-lower spacer ring; 165-middle spacer ring; 170-oil level control member; 171-oil level gauge; 172-oil pipe; 200-driving structure; 210-driving motor; 220-transmission member; 221-driven pulley; 222-driving pulley; 223-transmission belt; 230-eccentric block; 231-auxiliary eccentric block; 240-fastener; 241-pressure cover; 242-muffler. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-Figure 3 The utility model provides a technical solution: a multi-purpose thin oil vibrator, including a vibrator structure 100 and a driving structure 200.

[0023] See also Figure 1-Figure 3 The exciter structure 100 includes a bearing cavity 110, an outer tapered sleeve 120 and a shaft 160. The bearing cavity 110 is installed on the outer tapered sleeve 120 through a connecting piece 130. An oil cavity is formed inside the bearing cavity 110. A lower end cover 140 and an upper end cover 150 are installed at both ends of the bearing cavity 110 by bolts. A one-way thrust ball bearing 161 is interference-connected at one end of the shaft 160. Two cylindrical roller bearings 162 are also interference-connected on the shaft 160. A blade 163 is fixed on the shaft 160. The one-way thrust ball bearing 161, two cylindrical roller bearings 162 and the blade 163 are located inside the bearing cavity 110. The blade 163 is located between the two cylindrical roller bearings 162. One end of the shaft 160 passes through the upper end cover 150 and extends to the outside. An overflow shaft hole for heat dissipation is also formed on the shaft 160.

[0024] The connecting member 130 includes a connecting bolt 131 and a nut 132. The connecting bolt 131 passes through the connecting ears on the outer cone sleeve 120 and the bearing cavity 110. The end of the connecting bolt 131 is threadedly connected with the nut 132. Here, the bearing cavity 110 is installed on the outer cone sleeve 120 through the connecting member 130, which can be easily disassembled. An O-ring 141 is provided between the lower end cover 140 and the bearing cavity 110, and an oil seal 151 is provided between the upper end cover 150 and the shaft rod 160. Here, the shaft rod 160 and the bearing cavity 110 are sealed by the O-ring 141 and the oil seal 151, which is conducive to improving the sealing performance during use.

[0025] A lower spacer ring 164 is provided at the lower end of the bearing cavity 110, and the lower spacer ring 164 is located between the lower end cover 140 and the cylindrical roller bearing 162. A middle spacer ring 165 is provided inside the bearing cavity 110, and the middle spacer ring 165 is located between the two cylindrical roller bearings 162. An oil tank 142 is fixed on the lower end cover 140, and the oil tank 142 is connected to the oil cavity. An oil level control member 170 is connected to the oil tank 142. The oil level control member 170 includes an oil level gauge 171 and an oil pipe 172, and the oil level gauge 171 is connected to the oil pipe 172, and the oil pipe 172 is connected to the oil tank 142. An upper oil line 111 and a lower oil line 112 are formed on the bearing cavity 110. Here, by setting the oil level gauge 171, the liquid level of the oil cavity inside the bearing cavity 110 can be controlled between the upper oil line 111 and the lower oil line 112, thereby improving the utilization rate of the oil.

[0026] See also Figure 1 and Figure 2 The driving structure 200 includes a driving motor 210 and an eccentric block 230. The driving motor 210 is connected to the shaft 160 through a transmission member 220. The eccentric block 230 is keyed to the shaft 160. An auxiliary eccentric block 231 is fixed on the surface of the eccentric block 230. The auxiliary eccentric block 231 can drive the flow of air on the surface of the bearing cavity 110 during rotation, so that the bearing cavity 110 can be cooled externally to keep the temperature inside the bearing cavity 110 within a reasonable range.

[0027] The transmission member 220 includes a driven pulley 221 and a driving pulley 222. The driven pulley 221 is keyed to the end of the shaft 160, and the driving pulley 222 is keyed to the end of the output shaft of the driving motor 210. The driving pulley 222 and the driven pulley 221 are connected by a transmission belt 223. Here, the driving motor 210 drives the driving pulley 222 to rotate, and then the driven pulley 221 is driven to rotate under the action of the transmission belt 223, so that the shaft 160 can rotate accordingly, thereby driving the eccentric block 230 to rotate. A pressure cap 241 is installed on the driven pulley 221 by bolts, and a muffler 242 is installed on the pressure cap 241. Here, the pressure cap 241 is installed on the driven pulley 221 by bolts, which can improve the stability of the installation of the driven pulley 221. At the same time, the muffler 242 can be used to reduce noise when the driven pulley 221 rotates to eliminate excess noise.

[0028] Specifically, the working principle of the multi-purpose thin oil vibrator is as follows: when in use, the driving motor 210 drives the driven pulley 221 to rotate through the transmission belt 223, and the rotation of the driven pulley 221 drives the shaft 160 and the eccentric block 230 and the auxiliary eccentric block 231 to rotate. During the rotation of the shaft 160, the one-way thrust ball bearing 161 bears the axial force, and the two cylindrical roller bearings 162 bear the radial force to assist in bearing the axial force. The oil in the oil chamber inside the bearing cavity 110 is thrown upward by the rotation of the blade 163, and an oil film is always suspended on the one-way thrust ball bearing 161 and the two cylindrical roller bearings 162, so that the bearing is Better lubrication, which can lubricate on the one hand and cool down on the other hand. The air cooling of blade 163 plus the thin oil cooling ensure that the bearing temperature is always kept within the allowable range. The excess heat in the oil chamber can be discharged through the muffler 242 and the overflow hole on the shaft. In this way, when in use, the radial force is borne by the one-way thrust ball bearing 161 and the cylindrical roller bearing 162 to assist in bearing the axial force. Without adding other power, the blades 163 cooperate with each other to make the oil in the oil chamber in a suspended and tumbling state, forming a flowing oil film on the bearing surface, which can not only lubricate but also cool down. At the same time, the sealing method is changed, which is conducive to reducing the failure rate, increasing the service life and reducing corporate losses.

[0029] It should be noted that the specific model and specifications of the drive motor 210 need to be selected and determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in the field, so it will not be described in detail.

[0030] The power supply and principle of the driving motor 210 are clear to those skilled in the art and will not be described in detail here.

[0031] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A multi-purpose thin oil vibrator, comprising a vibrator structure (100) and a driving structure (200) connected to the vibrator structure (100), characterized in that: The exciter structure (100) comprises a bearing cavity (110), an outer tapered sleeve (120) and a shaft (160); the bearing cavity (110) is mounted on the outer tapered sleeve (120) via a connecting piece (130); an oil cavity is formed inside the bearing cavity (110); a lower end cover (140) and an upper end cover (150) are mounted at both ends of the bearing cavity (110) via bolts; and a one-way thrust ball bearing (161) is interference-connected at one end of the shaft (160). The shaft (160) is also interference-connected with two cylindrical roller bearings (162); a blade (163) is fixed to the shaft (160); the one-way thrust ball bearing (161), the two cylindrical roller bearings (162) and the blade (163) are located inside the bearing cavity (110); the blade (163) is located between the two cylindrical roller bearings (162); and one end of the shaft (160) passes through the upper end cover (150) and extends to the outside; The driving structure (200) comprises a driving motor (210) and an eccentric block (230); the driving motor (210) is connected to the shaft (160) via a transmission member (220); the eccentric block (230) is key-connected to the shaft (160); and an auxiliary eccentric block (231) is fixed to the surface of the eccentric block (230).

2. A multi-purpose thin oil vibrator according to claim 1, characterized in that: The connecting member (130) comprises a connecting bolt (131) and a nut (132); the connecting bolt (131) passes through the outer cone sleeve (120) and the connecting ears on the bearing cavity (110); and the end of the connecting bolt (131) is threadedly connected to the nut (132).

3. A multi-purpose thin oil vibrator according to claim 1, characterized in that: An O-ring (141) is provided between the lower end cover (140) and the bearing cavity (110), and an oil seal (151) is provided between the upper end cover (150) and the shaft (160).

4. A multi-purpose thin oil vibrator according to claim 1, characterized in that: An oil tank (142) is fixed on the lower end cover (140); the oil tank (142) is in communication with the oil chamber; and an oil level control component (170) is connected to the oil tank (142).

5. A multi-purpose thin oil vibrator according to claim 4, characterized in that: The oil level control component (170) comprises an oil level gauge (171) and an oil pipe (172); the oil level gauge (171) is connected to the oil pipe (172); the oil pipe (172) is in communication with the oil tank (142); and an oil upper line (111) and an oil lower line (112) are formed on the bearing cavity (110).

6. A multi-purpose thin oil vibrator according to claim 1, characterized in that: A lower spacer ring (164) is provided at the lower end of the bearing cavity (110), and the lower spacer ring (164) is located between the lower end cover (140) and the cylindrical roller bearing (162). A middle spacer ring (165) is provided inside the bearing cavity (110), and the middle spacer ring (165) is located between the two cylindrical roller bearings (162).

7. The multi-purpose thin oil vibrator according to claim 1, characterized in that: The transmission member (220) comprises a driven pulley (221) and a driving pulley (222); the driven pulley (221) is key-connected to the end of the shaft (160); the driving pulley (222) is key-connected to the end of the output shaft of the drive motor (210); the driving pulley (222) and the driven pulley (221) are connected to each other via a transmission belt (223).

8. The multi-purpose thin oil vibrator according to claim 7, characterized in that: A pressure cover (241) is mounted on the driven pulley (221) via bolts, and a muffler (242) is mounted on the pressure cover (241).

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