CN214869214U - Hybrid bearing main shaft unit mechanism for heavy crankshaft grinding machine - Google Patents
Hybrid bearing main shaft unit mechanism for heavy crankshaft grinding machine Download PDFInfo
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- CN214869214U CN214869214U CN202121384659.3U CN202121384659U CN214869214U CN 214869214 U CN214869214 U CN 214869214U CN 202121384659 U CN202121384659 U CN 202121384659U CN 214869214 U CN214869214 U CN 214869214U
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Abstract
The utility model provides a hybrid bearing main shaft unit mechanism for heavy crankshaft grinder, including the axle sleeve, back lid and protecgulum are installed respectively to the axle sleeve both ends, the axle sleeve inboard is equipped with the rear axle in proper order, axis and front axle, the axis both ends respectively with the one end fixed connection of rear axle and front axle, the rear axle, the outer wall of axis and front axle all not with the inner wall contact of axle sleeve, and centraxonial outer wall diameter is greater than front axle and rear axle, the rear axle is kept away from centraxonial one end and is run through the back lid and extend to the outside of axle sleeve, install the second oil blanket in one side that rear lid and rear axle were handed in. The utility model discloses in, be greater than the outer wall of rear axle and front axle through setting up centraxonial external diameter, realize that the booth clearance is large-traffic to promoted the flow speed of lubricated liquid in this mechanism working process, made lubricated liquid be difficult for condensing, lubricated effect is better, has effectively avoided power loss, has promoted production efficiency.
Description
Technical Field
The utility model relates to a crankshaft grinder equipment technical field, in particular to a hybrid bearing main shaft unit mechanism for heavy crankshaft grinder.
Background
Generally, a crankshaft grinding machine is used for grinding a crank journal and a main journal of an engine crankshaft in automobile tractors, diesel engine manufacturing plants, and repair plants. In the machining process of the crankshaft grinding machine, the dynamic and static pressure bearings are needed to drive the grinding wheel to rotate at a high speed to grind and cut the crankshaft. Specifically, the hybrid dynamic-static bearing refers to a sliding bearing which can work in a hydrostatic lubrication state and a hydrodynamic lubrication state. I.e. a sliding bearing that operates under both hydrostatic and hydrodynamic lubrication.
The prior patent (application number: 201220091783.5) proposes a crankshaft grinding machine, which comprises a tailstock, a grinding carriage, a grinding wheel, a support frame, a crankshaft, a headstock and a machine tool. The two ends of the machine tool are respectively provided with a tailstock and a headstock, a crankshaft is arranged between the tailstock and the headstock, one side of the crankshaft is provided with a grinding carriage, the grinding carriage is provided with a grinding wheel, and the other side of the crankshaft is provided with a support frame. The grinding machine can realize the grinding processing of the main journal and the connecting rod journal of the crankshaft by clamping on the same machine tool at one time. Compared with the traditional processing method: the grinding machine has the advantages of simple and convenient operation, low labor intensity, low energy consumption and good stability.
However, this apparatus cannot solve the problems of bearing vibration generated during high-speed grinding and power loss due to incomplete lubrication, thereby causing power loss and reducing production efficiency.
SUMMERY OF THE UTILITY MODEL
Based on this, the utility model aims to provide a hybrid bearing main shaft unit mechanism for heavy crankshaft grinder for solve the technical problem who provides among the above-mentioned background art.
The utility model provides a hybrid bearing main shaft unit mechanism for heavy crankshaft grinding machine, including the axle sleeve, back lid and protecgulum are installed respectively to the axle sleeve both ends, the axle sleeve inboard is equipped with rear axle, axis and front axle in proper order, the both ends of axis respectively with the one end fixed connection of rear axle and front axle, the outer wall of rear axle, axis and front axle all does not contact with the inner wall of axle sleeve, and the outer wall diameter of axis is greater than the outer wall diameter of front axle;
the rear axle is kept away from centraxonial one end and is run through the back lid and extend to the outside of axle sleeve, the back lid with one side that the back axle contacts is installed the second oil blanket the periphery that the back axle is close to the axle sleeve is installed the adapter sleeve the periphery of adapter sleeve is equipped with the transmission chi through the bolt fastening, the adapter sleeve with be equipped with the clearance between the transmission chi.
Preferably, one end of the front shaft, which is far away from the middle shaft, penetrates through the front cover and extends to the outer side of the shaft sleeve, a grinding wheel is arranged at the free tail end of the front shaft, and a first oil seal is arranged on one side, which is intersected with the front shaft, of the front cover. In the preferred embodiment, the first oil seal can prevent the lubricating liquid in the shaft sleeve from flowing out.
Preferably, the distance between the outer wall of the middle shaft and the inner wall of the shaft sleeve is 0.1-0.3 mm, and the distance between the outer wall of the rear shaft and the inner wall of the shaft sleeve is 1-1.5 mm. In the preferred embodiment, the outer diameter of the middle shaft is larger than that of the rear shaft and the front shaft, so that the flowing speed of the lubricating liquid can be increased in the working process of the mechanism, the effect of difficult condensation can be realized, and the lubricating effect is better.
Preferably, a plurality of springs are equally arranged between the connecting sleeve and the transmission ruler. In this preferred embodiment, the vibration force that produces after the transmission chi receives belt transmission can be absorbed through a plurality of springs that set up to avoid producing the problem that vibrations lead to power to run off because of the bearing.
Preferably, one end of the rear shaft, which is close to the outer side of the shaft sleeve, is connected with a fixed plate through a bolt, and the upper end and the lower end of the fixed plate are both connected with a transmission ruler through bolts. In this preferred embodiment, can make the transmission chi fixed more stable through the fixed plate, the transmission effect is better.
Preferably, the front cover and the rear cover are fixedly connected with the shaft sleeve through bolts, and a first rubber ring and a second rubber ring are respectively bonded on one side, close to the shaft sleeve, of the front cover and one side, close to the shaft sleeve, of the rear cover. In the preferred embodiment, the sealing performance of the mechanism can be further improved through the first rubber ring and the second rubber ring.
Preferably, the bottom end of the shaft sleeve is provided with a fixed seat, and two sides of the fixed seat are provided with a plurality of thread grooves. In the preferred embodiment, the securing of the mechanism is achieved by a threaded groove.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model provides a hybrid bearing main shaft unit mechanism for heavy crankshaft grinding machine drives the transmission chi through the belt and makes this mechanism begin to operate, and in the operation process, because the external diameter of the axis that sets up is greater than rear axle and front axle, realizes the small clearance large-traffic to promoted the flow velocity of lubricating fluid in this mechanism working process, made lubricating fluid be difficult for condensing, lubricated effect is better;
meanwhile, a plurality of springs are equally arranged between the connecting sleeve and the transmission ruler, so that the vibration force generated after the transmission ruler is transmitted by the belt can be absorbed, and the problem of power loss caused by vibration generated by a bearing is avoided;
set up first oil blanket through the crossing one side of protecgulum and front axle, the second oil blanket of the side-mounting that back lid and rear axle were crossed can avoid the lubricated liquid in the axle sleeve to flow to solve vibrations and lubricated scheduling problem, effectively avoided power loss, promoted production efficiency.
Additional features and advantages of the disclosure will be set forth in the description which follows, or in part may be learned by the practice of the above-described techniques of the disclosure, or may be learned by practice of the disclosure.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
Fig. 1 is a schematic view of an appearance axial measurement structure of a hybrid bearing spindle unit mechanism for a heavy crankshaft grinding machine according to the present invention;
FIG. 2 is a schematic view of the front view cross-sectional structure of the hybrid bearing spindle unit mechanism for the heavy crankshaft grinding machine of the present invention;
FIG. 3 is an enlarged view of the structure at A in FIG. 2;
fig. 4 is an enlarged view of the structure at B in fig. 2.
Description of the main symbols:
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 to 4, the present invention provides a hybrid bearing spindle unit mechanism for a heavy crankshaft grinding machine, including a shaft sleeve 1.
The two ends of the shaft sleeve 1 are respectively provided with a rear cover 9 and a front cover 2, and the inner side of the shaft sleeve 1 is sequentially provided with a rear shaft 5, a middle shaft 4 and a front shaft 3. Two ends of the middle shaft 4 are fixedly connected with one ends of the rear shaft 5 and the front shaft 3 respectively, and the outer walls of the rear shaft 5, the middle shaft 4 and the front shaft 3 are not in contact with the inner wall of the shaft sleeve 1.
In the present embodiment, the outer wall diameter of the middle shaft 4 is larger than the outer wall diameter of the front shaft 3 and the middle shaft 4. One end of the rear shaft 5, which is far away from the middle shaft 4, penetrates through the rear cover 9 and extends to the outer side of the shaft sleeve 1, and a second oil seal 91 is installed on one side, which is contacted with the rear shaft 5, of the rear cover 9. A connecting sleeve 7 is arranged on the periphery of the rear shaft 5 close to the shaft sleeve 1, a transmission ruler 6 is fixedly arranged on the periphery of the connecting sleeve 7 through bolts, and a gap is arranged between the connecting sleeve 7 and the transmission ruler 6.
Furthermore, one end of the front shaft 3, which is far away from the middle shaft 4, penetrates through the front cover 2 and extends to the outer side of the shaft sleeve 1, and a grinding wheel 31 is arranged at the free tail end of the shaft sleeve 1. Further, a first oil seal 21 is mounted on the side where the front cover 2 intersects the front shaft 3. It will be appreciated that the outflow of the lubricating fluid in the sleeve 1 can be avoided by the first oil seal 21.
In this embodiment, the distance between the outer wall of the center shaft 4 and the inner wall of the shaft sleeve 1 is 0.1-0.3 mm, and the distance between the outer wall of the rear shaft 5 and the inner wall of the shaft sleeve 1 is 1-1.5 mm. It can be understood that the outer diameter of the middle shaft 4 is larger than the outer diameter of the rear shaft 5 and the outer diameter of the front shaft 3, the flowing speed of lubricating liquid can be increased in the working process of the mechanism, the lubricating liquid is not easy to condense, and the lubricating effect is better.
In addition, a fixed seat 11 is installed at the bottom end of the shaft sleeve 1, and a plurality of thread grooves 111 are opened at both sides of the fixed seat 11. In this embodiment, the fixation of the mechanism is achieved by means of a threaded groove 111.
Meanwhile, a plurality of springs 71 are equally installed between the connecting sleeve 7 and the transmission ruler 6. It can be understood that the vibration force generated after the transmission ruler 6 is transmitted by the belt can be absorbed by arranging the spring 71, so that the problem of power loss caused by vibration generated by the bearing is avoided.
The one end that is close to the axle sleeve 1 outside at rear axle 5 has fixed plate 8 through bolted connection, and both ends are all connected with transmission chi 6 through the bolt about fixed plate 8. It can be understood that the transmission ruler 6 can be fixed more stably through the fixing plate 8, and the transmission effect is better.
Further, the front cover 2 and the rear cover 9 are both fixedly connected with the shaft sleeve 1 through bolts, and the first rubber ring 22 and the second rubber ring 92 are respectively bonded on one sides of the front cover 2 and the rear cover 9 close to the shaft sleeve 1. It will be appreciated that by providing the first rubber ring 22 and the second rubber ring 92, further improvements in the sealing of the mechanism can be achieved.
The utility model discloses a concrete operation as follows:
in the utility model, the belt drives the transmission ruler 6 to start the mechanism to operate, and in the operation process, the outer diameter of the middle shaft 4 is larger than the outer diameters of the rear shaft 5 and the front shaft 3, so that the small clearance and the large flow are realized, the flowing speed of the lubricating liquid in the working process of the mechanism is increased, the lubricating liquid is not easy to condense, and the lubricating effect is better;
the plurality of springs 71 are equally arranged between the connecting sleeve 7 and the transmission ruler 6, so that the vibration force generated after the transmission ruler 6 is transmitted by a belt can be absorbed, and the problem of power loss caused by vibration of a bearing is avoided;
lubricating liquid in the shaft sleeve 1 can be prevented from flowing out by installing the first oil seal 21 at the side where the front cover 2 and the front shaft 3 intersect and installing the second oil seal 91 at the side where the rear cover 9 and the rear shaft 5 intersect; the front cover 2 and the rear cover 9 are respectively bonded with the first rubber ring 22 and the second rubber ring 92 at one side close to the shaft sleeve 1, so that the sealing performance of the mechanism can be further improved.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the technical solution of the present invention, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: those skilled in the art can still modify or easily conceive of changes in the technical solutions described in the foregoing embodiments or make equivalent substitutions for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. A hybrid bearing spindle unit mechanism for a heavy crankshaft grinding machine comprises a shaft sleeve (1) and is characterized in that a rear cover (9) and a front cover (2) are respectively mounted at two ends of the shaft sleeve (1), a rear shaft (5), a middle shaft (4) and a front shaft (3) are sequentially arranged on the inner side of the shaft sleeve (1), two ends of the middle shaft (4) are respectively fixedly connected with one ends of the rear shaft (5) and the front shaft (3), the outer walls of the rear shaft (5), the middle shaft (4) and the front shaft (3) are not in contact with the inner wall of the shaft sleeve (1), and the diameter of the outer wall of the middle shaft (4) is larger than that of the outer wall of the front shaft (3);
the one end that axis (4) was kept away from in rear axle (5) runs through back lid (9) and extend to the outside of axle sleeve (1), back lid (9) with second oil blanket (91) are installed to one side that rear axle (5) contacted rear axle (5) are close to the periphery of axle sleeve (1) and install adapter sleeve (7) the periphery of adapter sleeve (7) is equipped with transmission chi (6) through the bolt fastening, adapter sleeve (7) with be equipped with the clearance between transmission chi (6).
2. The dynamic-static bearing spindle unit mechanism for the heavy crankshaft grinding machine as claimed in claim 1, characterized in that one end of the front shaft (3) far away from the middle shaft (4) penetrates through the front cover (2) and extends to the outer side of the shaft sleeve (1), a grinding wheel (31) is arranged at the free tail end of the front shaft (3), and a first oil seal (21) is arranged at one side of the front cover (2) intersected with the front shaft (3).
3. The dynamic-static pressure bearing spindle unit mechanism for the heavy crankshaft grinding machine as claimed in claim 1, characterized in that the distance between the outer wall of the middle shaft (4) and the inner wall of the shaft sleeve (1) is 0.1-0.3 mm, and the distance between the outer wall of the rear shaft (5) and the inner wall of the shaft sleeve (1) is 1-1.5 mm.
4. The hydrostatic bearing spindle unit mechanism for a heavy-duty crankshaft grinding machine according to claim 1, characterized in that a plurality of springs (71) are installed equally between the connecting sleeve (7) and the drive rule (6).
5. The dynamic-static pressure bearing spindle unit mechanism for the heavy crankshaft grinding machine as claimed in claim 1, characterized in that one end of the rear shaft (5) close to the outer side of the shaft sleeve (1) is connected with a fixed plate (8) through a bolt, and the upper end and the lower end of the fixed plate (8) are both connected with a transmission ruler (6) through bolts.
6. The dynamic-static pressure bearing spindle unit mechanism for the heavy crankshaft grinding machine is characterized in that the front cover (2) and the rear cover (9) are fixedly connected with the shaft sleeve (1) through bolts, and a first rubber ring (22) and a second rubber ring (92) are respectively bonded on one sides of the front cover (2) and the rear cover (9) close to the shaft sleeve (1).
7. The dynamic-static pressure bearing spindle unit mechanism for the heavy crankshaft grinding machine as claimed in claim 1, wherein a fixed seat (11) is installed at the bottom end of the shaft sleeve (1), and a plurality of thread grooves (111) are formed on two sides of the fixed seat (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121384659.3U CN214869214U (en) | 2021-06-22 | 2021-06-22 | Hybrid bearing main shaft unit mechanism for heavy crankshaft grinding machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121384659.3U CN214869214U (en) | 2021-06-22 | 2021-06-22 | Hybrid bearing main shaft unit mechanism for heavy crankshaft grinding machine |
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| CN214869214U true CN214869214U (en) | 2021-11-26 |
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| CN202121384659.3U Active CN214869214U (en) | 2021-06-22 | 2021-06-22 | Hybrid bearing main shaft unit mechanism for heavy crankshaft grinding machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114799238A (en) * | 2022-06-28 | 2022-07-29 | 云南省机械研究设计院有限公司 | High-bearing large dynamic horizontal dynamic and static pressure main shaft system |
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2021
- 2021-06-22 CN CN202121384659.3U patent/CN214869214U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114799238A (en) * | 2022-06-28 | 2022-07-29 | 云南省机械研究设计院有限公司 | High-bearing large dynamic horizontal dynamic and static pressure main shaft system |
| CN114799238B (en) * | 2022-06-28 | 2022-09-23 | 中国机械总院集团云南分院有限公司 | High-bearing large dynamic horizontal dynamic and static pressure main shaft system |
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