CN217381260U - Two-support three-crank five-center self-balancing crankshaft and bearing bush combined structure - Google Patents
Two-support three-crank five-center self-balancing crankshaft and bearing bush combined structure Download PDFInfo
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- CN217381260U CN217381260U CN202221175465.7U CN202221175465U CN217381260U CN 217381260 U CN217381260 U CN 217381260U CN 202221175465 U CN202221175465 U CN 202221175465U CN 217381260 U CN217381260 U CN 217381260U
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Abstract
A two-support three-crank five-center self-balancing crankshaft and bearing bush combined structure belongs to the technical field of reciprocating fluid delivery pumps. The utility model discloses a main shaft neck, support axle journal, balancing weight, a serial communication port, the support axle journal includes first support axle journal and second support axle journal, the main shaft neck with first support axle journal is connected, first support axle journal and first transition crank connection, first transition crank turns with first off-centre and is connected, first off-centre turn with the balancing weight is connected, the balancing weight opposite side turns with the second off-centre and is connected, the second off-centre turns with second transition crank connection, second transition crank turns with the third off-centre and is connected, the third off-centre turns with third transition crank connection, the third transition crank with the second supports the axle journal connection. The utility model discloses can realize the self-balancing, guarantee the operation stable, simple structure, the manufacturability is reasonable, and low in manufacturing cost has strengthened bearing capacity, and compact structure reduces whole space.
Description
Technical Field
The utility model belongs to the technical field of reciprocal fluid delivery pump, specifically relate to a two support three turn five heart self-balancing bent axles and bearing bush integrated configuration.
Background
The reciprocating slurry pump has wide application in metallurgy, mine, chemical industry and other industries. In the existing reciprocating slurry pump crank connecting rod transmission mechanism, a crankshaft cannot achieve a complete self-balancing effect, the stability of the reciprocating pump in the motion process is influenced, and the vibration is large; a bearing sleeve structure is arranged between the bearings on the two sides of the crankshaft and the transmission box body, so that the service life of the bearings is shortened, and the running stability is poor; the crankshaft generally adopts four supporting structures in high power, the structure is complex, and the occupied space is large. The crankshaft is a key part in the reciprocating slurry pump, and at present, two support structures do not have an ideal product which completely realizes a self-balancing structure, is low in manufacturing cost and has stable mechanical performance.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the problems, makes up the defects of the prior art, and provides a two-support three-throw five-center self-balancing crankshaft and bearing bush combined structure; the utility model discloses can realize the self-balancing, guarantee the operation stable, simple structure, the manufacturability is reasonable, and low in manufacturing cost has strengthened bearing capacity, and compact structure reduces whole space.
In order to achieve the above purpose, the utility model adopts the following technical scheme.
The utility model provides a two support three turn five heart self-balancing crankshafts and bearing bush integrated configuration, including trunnion, support axle journal, balancing weight, its characterized in that, the support axle journal includes first support axle journal and second support axle journal, the trunnion with first support axle journal is connected, first support axle journal is connected with first transition crank, first transition crank is connected with first eccentric turning, first eccentric turning with the balancing weight is connected, the balancing weight opposite side is connected with second eccentric turning, second eccentric turning is connected with second transition crank, second transition crank is connected with third eccentric turning, the third eccentric turning is connected with third transition crank, third transition crank with second support axle journal is connected, the aligning journal the first support axle journal the second support axle journal is coaxial, first support axle journal cover has first roller bearing, the first self-aligning roller bearing side portion is fixed on the first transition crank side portion, the second self-aligning roller bearing is sleeved at the outer end of the second support shaft neck, the second self-aligning roller bearing side portion is fixed on the third transition crank side portion, the first self-aligning roller bearing and the first support shaft neck are matched with each other to form a taper lining, and the taper lining is connected with a fastening nut.
Furthermore, the common main shaft center of the main shaft neck, the first supporting shaft neck and the second supporting shaft neck and the connecting lines of the first eccentric crank shaft center, the second eccentric crank shaft center and the third eccentric crank shaft center are 120 degrees.
Furthermore, the balancing weight is a regular disc, and a common main shaft center of the main shaft journal, the first supporting shaft journal and the second supporting shaft journal is not concentric with the axis of the balancing weight.
Further, the first transition crank, the second transition crank and the third transition crank are all arc transition structures.
Furthermore, the taper bush is of a hydraulic withdrawal sleeve structure.
The beneficial effects of the utility model.
The utility model discloses a two bearing structure, whole length reduces, has strengthened bearing capacity, and compact structure reduces whole space, and three turn five heart structures realize the self-balancing, have guaranteed the operation stable, avoid because the unbalanced vibration noise and the damage that causes, simple structure, the manufacturability is reasonable, low in manufacturing cost.
Drawings
In order to make the technical problem, technical scheme and beneficial effect that the utility model solved more clearly understand, it is right to combine the attached drawing and detailed description mode below the utility model discloses further detailed description. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Fig. 1 is a side view of the structure of the present invention.
Fig. 2 is an enlarged schematic view of fig. 1 a according to the present invention.
Fig. 3 is a side view of the crankshaft of the present invention.
Fig. 4 is a perspective view of the crankshaft of the present invention.
Fig. 5 is a five axes diagram of the present invention.
The labels in the figure are: the device comprises a main journal 1, a first supporting journal 2, a second supporting journal 3, a first transition crank 4, a first eccentric crank 5, a counterweight 6, a second eccentric crank 7, a second transition crank 8, a third eccentric crank 9, a third transition crank 10, a first aligning roller bearing 11, a second aligning roller bearing 12, a taper bush 13, a set nut 14, a main spindle center 15, a first eccentric crank axis 16, a second eccentric crank axis 17, a third eccentric crank axis 18 and a counterweight axis 19.
Detailed Description
As shown in the accompanying drawings, the present embodiment provides a two-support three-throw five-center self-balancing crankshaft and bearing bush combination structure, which includes a main journal 1, a support journal, and a balancing weight 6, where the support journal includes a first support journal 2 and a second support journal 3.
The main journal 1, the first supporting journal 2 and the second supporting journal 3 are coaxial, and the connecting lines of a common main spindle 15 of the main journal 1, the first supporting journal 2 and the second supporting journal 3, a first eccentric turning spindle 16, a second eccentric turning spindle 17 and a third eccentric turning spindle 18 are 120 degrees; the balancing weight 6 is a regular disk, the diameter of the balancing weight 6 is close to the common maximum overall dimension of the three eccentric cranks, the balancing weight is an independent axis, the structure is simple, raw materials can be fully utilized, the processing technology is simplified, the effect is improved, and the cost is reduced.
The common main axle center 15 of the main axle journal 1, the first supporting axle journal 2 and the second supporting axle journal 3 is not concentric with the counterweight block axle center 19. The position of the axle center 19 of the balancing weight is determined by the relative position and the included angle of the common main axle center 15 of the main axle neck 1, the first supporting axle neck 2 and the second supporting axle neck 3 according to the design requirement, the process needs to be realized through adjustment, finally, the integral mass center and the axle neck of the crankshaft are realized, the first supporting axle neck 2 and the common main axle center 15 of the second supporting axle neck 3 are on the same center, the self-balancing is realized, the balance stability of the integral crankshaft in the operation process is ensured, the problems of uneven balance weight adjustment, abnormal sound or uneven stress in the rotation process caused by the concentric structure of the balancing weight 6 and the main axle in the prior art are solved.
The outer pot head of first support journal 2 has first self-aligning roller bearing 11, and the lateral part of first self-aligning roller bearing 11 is fixed at 4 lateral parts of first transition crank, and the outer pot head of second support journal 3 has second self-aligning roller bearing 12, and the lateral part of second self-aligning roller bearing 12 is fixed at 10 lateral parts of third transition crank. The crankshaft supporting position is located at the positions of the first self-aligning roller bearing 11 and the second self-aligning roller bearing 12 on the two sides, the middle supporting point of the traditional structure is eliminated, the overall length of the crankshaft is reduced, the bearing capacity is enhanced, and the structure is compact.
Between first self-aligning roller bearing 11 and the first support journal 2, between second self-aligning roller bearing 12 and the second support journal 3 all the cooperation be provided with tapering bush 13, tapering bush 13 can select for use 1: 12 or 1: 30 and the taper bush 13 with different tapers are connected with a fastening nut 14. First self-aligning roller bearing 11 and second self-aligning roller bearing 12 that have tapering bush 13 structure not only play the supporting role, tightly decide through tapering bush 13 and tight set nut 14, are fixed first self-aligning roller bearing 11 and second self-aligning roller bearing 12 completely, can't carry out the drunkenness, have guaranteed driven stability.
The taper bush 13 is of a hydraulic sleeve-withdrawing structure, the inner rings of the first self-aligning roller bearing 11 and the second self-aligning roller bearing 12 are expanded by hydraulic oil, the relative positions of the inner rings are adjusted to adjust the bearing clearance, the bearing stress of the bearing is ensured, and the bearing is fixed by a fastening nut 14 after the adjustment is completed.
When the self-aligning roller bearing assembly is installed, the outer rings of the first self-aligning roller bearing 11 and the second self-aligning roller bearing 12 are in direct interference fit with a transmission case, the inner ring is matched with the taper bush 13 to adjust the bearing clearance, the tightening nut 14 is rotationally pushed to be fixed, in the dismounting process, the hole is pressed through the taper bush 13, a hydraulic expanding and loosening mode is adopted, the taper bush 13 is withdrawn, and the first self-aligning roller bearing 11 and the second self-aligning roller bearing 12 are dismounted.
It should be understood that the above detailed description of the present invention is only used for illustrating the present invention and not limited to the technical solutions described in the embodiments of the present invention, and those skilled in the art should understand that the present invention can still be modified or equivalently replaced to achieve the same technical effects; as long as the use requirement is satisfied, the utility model is within the protection scope.
Claims (5)
1. A two-support three-throw five-center self-balancing crankshaft and bearing bush combined structure comprises a main journal (1), a support journal and a balancing weight (6), and is characterized in that the support journal comprises a first support journal (2) and a second support journal (3), the main journal (1) is connected with the first support journal (2), the first support journal (2) is connected with a first transition crank (4), the first transition crank (4) is connected with a first eccentric throw (5), the first eccentric throw (5) is connected with the balancing weight (6), the other side of the balancing weight (6) is connected with a second eccentric throw (7), the second eccentric throw (7) is connected with a second transition crank (8), the second transition crank (8) is connected with a third eccentric throw (9), and the third eccentric throw (9) is connected with a third transition crank (10), the third transition crank (10) is connected with the second support journal (3), the main journal (1), the first support journal (2) and the second support journal (3) are coaxial, a first self-aligning roller bearing (11) is sleeved at the outer end of the first supporting journal (2), the side part of the first self-aligning roller bearing (11) is fixed on the side part of the first transition crank (4), a second self-aligning roller bearing (12) is sleeved at the outer end of the second supporting journal (3), the side part of the second self-aligning roller bearing (12) is fixed on the side part of the third transition crank (10), first self-aligning roller bearing (11) with between first support journal (2) second self-aligning roller bearing (12) with all cooperate between second support journal (3) and be provided with tapering bush (13), all be connected with lock nut (14) on tapering bush (13).
2. The combination structure of a two-support three-throw five-center self-balancing crankshaft and a bearing bushing according to claim 1, wherein the connecting lines of the common main axle (15) of the main journal (1), the first support journal (2) and the second support journal (3) and the first eccentric throw axle (16), the second eccentric throw axle (17) and the third eccentric throw axle (18) are 120 ° with each other.
3. The structure of claim 1, wherein the weight member (6) is a regular disk, and the common main axis (15) of the main journal (1), the first support journal (2), and the second support journal (3) is non-concentric with the weight member axis (19).
4. An assembly structure of an two-support three-throw five-center self-balancing crankshaft and a bearing bush according to claim 1, characterized in that the first transition crank (4), the second transition crank (8) and the third transition crank (10) are all arc transition structures.
5. A two support, three throw, five center, self balanced crankshaft and bearing bushing combination as claimed in claim 1 wherein the taper bushing (13) is a hydraulic pressure stripper sleeve structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221175465.7U CN217381260U (en) | 2022-05-17 | 2022-05-17 | Two-support three-crank five-center self-balancing crankshaft and bearing bush combined structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221175465.7U CN217381260U (en) | 2022-05-17 | 2022-05-17 | Two-support three-crank five-center self-balancing crankshaft and bearing bush combined structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217381260U true CN217381260U (en) | 2022-09-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221175465.7U Active CN217381260U (en) | 2022-05-17 | 2022-05-17 | Two-support three-crank five-center self-balancing crankshaft and bearing bush combined structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217381260U (en) |
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- 2022-05-17 CN CN202221175465.7U patent/CN217381260U/en active Active
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