Lubricating structure for unloading sleeve bearing of press clutch
By designing lubricating oil passages and oil seals in the lubricating structure of the press clutch unloading sleeve bearing, the problems of uneven lubrication and easy bearing damage in the prior art are solved, and uniform lubrication and working stability of the bearing are achieved.
Patent Information
- Application Number
- CN202421735903.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-22
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-07-22
AI Technical Summary
After the clutch unloading sleeve bearing of existing dilute oil lubricated double-point closed presses is added, the amount of oil immersion increases and the lubrication is uneven, resulting in an increase in the internal temperature of the bearing, which is easy to damage and needs to be replaced frequently.
A lubricating structure including a drive shaft, a loading sleeve and a bearing is designed. By setting a lubricating oil passage on the loading sleeve, including an oil inlet passage and a return passage, and an oil seal is provided in the through hole to ensure that the lubricating oil flows evenly to the bearing.
The bearings are uniformly lubricated at the unloading sleeve, which improves working stability, prevents oil from overflowing, and extends the service life of the bearing.
Smart Images
Figure CN222977253U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a lubrication structure for a bearing of a clutch unloading sleeve of a press. Background Art
[0002] For the lubrication of existing double-point closed-type presses with thin oil lubrication, the bearings at the clutch unloading sleeves are mostly oil-immersed lubrication. When adding a stage of transmission, due to reasons such as the gear layout and size, the oil immersion amount will increase and it is impossible to ensure that oil can enter the bearings. During operation, the internal temperature of the bearings rises too fast and the lubrication is uneven. After long-term use, there are too many impurities at the bearings and they are extremely easy to be damaged due to temperature rise, and new bearings need to be replaced. Content of the Utility Model
[0003] The purpose of the utility model is to solve the above-mentioned deficiencies of the prior art and provide a lubrication structure for a bearing of a clutch unloading sleeve of a press.
[0004] A lubrication structure for a bearing of a clutch unloading sleeve of a press includes a transmission shaft, an unloading sleeve, and a bearing. The inner ring of the bearing is sleeved on the outer arc surface of the transmission shaft. A through hole with a stepped structure is provided at the center of the bottom surface of the unloading sleeve. The front end of the through hole is in clearance fit with the transmission shaft, the rear end of the through hole is sleeved on the outer ring of the bearing, and an oil seal is provided between the middle section of the through hole and the outer arc surface of the transmission.
[0005] The unloading sleeve is provided with a lubricating oil passage, which includes an oil inlet passage and an oil return passage. The oil ports of the oil inlet passage and the oil return passage are both located on the outer side wall of the unloading sleeve. The oil inlet passage is connected to the outer ring of the bearing through a transition oil passage. The oil inlet passage is located between the bearing and one side of the oil seal, and the oil return passage is connected to the oil seal and is located on the other side of the oil seal.
[0006] Preferably, the inner wall of the through hole with a stepped structure is successively provided with a first step, a second step, a third step, and a fourth step from left to right. The bearing is located at the first step, the oil seal is located at the third step, and the space between the third step and the fourth step is connected to an oil outlet passage.
[0007] Preferably, the transition oil passage includes a first oil passage and a second oil passage. The first oil passage is parallel to the axis of the unloading sleeve and is connected to the oil inlet passage. The second oil passage is perpendicular to the axis of the unloading sleeve and is connected to the first oil passage and the outer ring of the bearing. The oil inlet passage and the oil return passage are both perpendicular to the axis of the unloading sleeve.
[0008] Preferably, the space between the first step and the second step is connected to a third oil passage, the third oil passage is connected to a fourth oil passage, the fourth oil passage is connected to other structures to be lubricated, the third oil passage is perpendicular to the axis of the unloading sleeve, and the fourth oil passage is parallel to the axis of the unloading sleeve.
[0009] Beneficial effects: Compared with the prior art, the utility model increases the number of distributor plates and the number of oil pipes on the basis of the original thin oil lubrication, realizing the lubrication of the bearing at the unloading sleeve; effectively improving the fluidity of the oil, enabling uniform lubrication at the bearing and improving the working stability; the oil return hole at the rear end of the bearing can prevent the oil from overflowing from the gap between the transmission shaft and the unloading sleeve. Description of the Drawings
[0010] Figure 1 is a schematic diagram of a lubrication structure for the bearing of the pressure machine clutch unloading sleeve;
[0011] Figure 2 is an enlarged view of part A;
[0012] Figure 3 is an enlarged view of part B;
[0013] In the figure, 1 is the transmission shaft, 2 is the unloading sleeve, 3 is the bearing, 4 is the first step, 5 is the second step, 6 is the third step, 7 is the fourth step, 8 is the oil inlet passage, 9 is the first oil passage, 10 is the second oil passage, 11 is the oil return passage, 12 is the third oil passage, and 13 is the fourth oil passage. Specific Embodiment
[0014] In order to deepen the understanding of the present utility model, the following will further elaborate on the present utility model in combination with embodiments and drawings. This embodiment is only used to explain the present utility model and does not constitute a limitation to the protection scope of the present utility model.
[0015] As Figures 1-3 shown, the transmission shaft 1, the unloading sleeve 2, the bearing 3, the first step 4, the second step 5, the third step 6, the fourth step 7, the oil inlet passage 8, the first oil passage 9, the second oil passage 10, the oil return passage 11, the third oil passage 12, and the fourth oil passage 13;
[0016] A lubrication structure for the bearing of the pressure machine clutch unloading sleeve includes a transmission shaft 1, an unloading sleeve 2, and a bearing 3. The inner ring of the bearing 3 is sleeved on the outer arc surface of the transmission shaft 1. A through hole with a stepped structure is provided at the center of the bottom surface of the unloading sleeve 2. The front end of the through hole is in clearance fit with the transmission shaft 1, the rear end of the through hole is sleeved on the outer ring of the bearing 3, and an oil seal is provided between the middle section of the through hole and the outer arc surface of the transmission.
[0017] Specifically, the inner wall of the through hole with a stepped structure is successively provided with a first step 4, a second step 5, a third step 6, and a fourth step 7 from left to right. The bearing 3 is located at the first step 4, the oil seal is located at the third step 6, and the space between the third step 6 and the fourth step 7 is connected to the oil outlet passage.
[0018] An oil lubrication passage is provided on the unloading sleeve 2. The oil lubrication passage includes an oil inlet passage 8 and an oil return passage 11. The oil ports of the oil inlet passage 8 and the oil return passage 11 are both located on the outer side wall of the unloading sleeve 2. The oil inlet passage 8 is connected to the outer ring of the bearing 3 through a transition oil passage. The oil inlet passage 8 is located between the bearing 3 and one side of the oil seal. The oil return passage 11 is connected to the oil seal and is located on the other side of the oil seal.
[0019] Specifically, the transition oil passage includes a first oil passage 9 and a second oil passage 10. The first oil passage 9 is parallel to the axis of the unloading sleeve 2 and is connected to the oil inlet passage 8. The second oil passage 10 is perpendicular to the axis of the unloading sleeve 2 and is connected to the first oil passage 9 and the outer ring of the bearing 3. The oil inlet passage 8 and the oil return passage 11 are both perpendicular to the axis of the unloading sleeve 2.
[0020] In addition, the space between the first step 4 and the second step 5 is connected to a third oil passage 12. The third oil passage 12 is connected to a fourth oil passage 13. The fourth oil passage 13 is connected to other structures to be lubricated. The third oil passage 12 is perpendicular to the axis of the unloading sleeve 2, and the fourth oil passage 13 is parallel to the axis of the unloading sleeve 2.
[0021] It should be noted that the first oil passage 9 and the second oil passage 10 are processed to lead the oil inlet passage 8 to the bearing 3. Therefore, after processing, the oil ports are sealed with a plug or a retaining piece. The third oil passage 12 is for connecting the space between the first step 4 and the second step 5 to the fourth oil passage 13. Therefore, the oil port is sealed with a plug.
[0022] Instructions for use: As shown in the figure, three hole positions are set at the overflow part of the unloading sleeve 2, including one oil inlet hole, one closed with a plug, and one through hole; three hole positions are also set at another place, including one oil return hole, one closed with a plug, and one through hole.
[0023] During lubrication, the distributor end is connected to the oil inlet hole through a oil pipe. As the transmission shaft 1 rotates, the lubricating oil flows in from the gap. The bearing 3 at the unloading sleeve 2 is fully lubricated. The oil flushes out the fine impurities during the processing of the bearing 3 through the through hole and is taken out to the gearbox, and then flows through the gap at the oil seal to the oil return passage 11. The oil return passage 11 is connected to the fuselage through a oil pipe to make the oil enter the gearbox, so that the oil will not overflow from the gap between the transmission shaft 1 and the unloading sleeve 2.
[0024] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.
Claims
1. A lubrication structure for a press clutch unloading sleeve bearing, characterized in that: It includes a transmission shaft, a load-relief sleeve, and a bearing. The inner ring of the bearing is sleeved on the outer arc surface of the transmission shaft. A through hole with a step structure is provided at the center of the bottom surface of the load-relief sleeve. The front end of the through hole is clearance-matched with the transmission shaft, and the rear end of the through hole is sleeved on the outer ring of the bearing. An oil seal is provided between the middle section of the through hole and the outer arc surface of the transmission shaft. The unloading sleeve is provided with a lubricating oil passage, which includes an oil inlet passage and an oil return passage. The oil ports of the oil inlet passage and the oil return passage are both located on the outer wall of the unloading sleeve. The oil inlet passage is connected to the outer ring of the bearing through a transition oil passage. The oil inlet passage is located between the bearing and one side of the oil seal. The oil return passage is connected to the oil seal and is located on the other side of the oil seal.
2. A lubrication structure for a press clutch unloading sleeve bearing according to claim 1, characterized in that: The inner wall of the through hole of the step structure is provided with a first step, a second step, a third step and a fourth step from left to right, the bearing is located on the first step, the oil seal is located on the third step, and the space between the third step and the fourth step is connected to the oil outlet.
3. A lubrication structure for a press clutch unloading sleeve bearing according to claim 2, characterized in that: The transition oil passage includes a first oil passage and a second oil passage. The first oil passage is parallel to the axis of the unloading sleeve and connected to the oil inlet passage. The second oil passage is perpendicular to the axis of the unloading sleeve and connected to the first oil passage and the outer ring of the bearing. The oil inlet passage and the oil return passage are both perpendicular to the axis of the unloading sleeve.
4. A lubrication structure for a press clutch unloading sleeve bearing according to claim 3, characterized in that: The space between the first step and the second step is connected to the third oil passage, the third oil passage is connected to the fourth oil passage, the fourth oil passage is connected to other structures to be lubricated, the third oil passage is perpendicular to the axis of the unloading sleeve, and the fourth oil passage is parallel to the axis of the unloading sleeve.