CN216097302U - Shaft hole abrasion repairing structure - Google Patents
Shaft hole abrasion repairing structure Download PDFInfo
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- CN216097302U CN216097302U CN202122377279.3U CN202122377279U CN216097302U CN 216097302 U CN216097302 U CN 216097302U CN 202122377279 U CN202122377279 U CN 202122377279U CN 216097302 U CN216097302 U CN 216097302U
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Abstract
The utility model discloses a shaft hole abrasion repairing structure, belongs to the technical field of mechanical maintenance, and provides a shaft hole abrasion repairing structure which can realize quick repairing and is simple in structure. The utility model relates to a shaft hole abrasion repairing structure, which comprises an original machine body shaft installation part, wherein an original shaft hole is arranged on the original machine body shaft installation part, and the structure is characterized in that: the novel positioning shaft sleeve is fixedly arranged on the outer side surface of the original body shaft mounting part, a novel shaft hole is formed in the novel positioning shaft sleeve, and the novel shaft hole is coaxial with the original shaft hole; the new pin shaft is inserted into and positioned and matched with the new shaft hole on the newly-added positioning shaft sleeve. The utility model has the advantages of simple and reliable structure and low cost, only needs to replace the original body shaft installation part by welding a corresponding newly-added positioning shaft sleeve, and can effectively and quickly solve the hidden trouble of equipment caused by shaft hole abrasion.
Description
Technical Field
The utility model relates to the technical field of mechanical maintenance, in particular to a repairing structure for a worn shaft hole for mounting a pin shaft.
Background
The connecting structure of the pin shaft and the shaft hole is one of mounting structures commonly adopted in mechanical structures; in normal operation, the pin shaft is generally in a close fit connection relationship to ensure the installation precision of the pin shaft and play a role in stably transmitting and transferring power; however, in the operation process, due to the influence of factors such as impact, vibration, corrosion, abrasion and the like, the fit clearance at the joint is continuously increased, so that synchronous abrasion of the shaft or the hole occurs, and due to the change of the stress direction of partial abrasion, the abrasion is often in an irregular state, as shown in fig. 2 and 3: the special-shaped wear state appears, and the connection form of the pin shaft and the shaft hole usually loses the positioning function, so that the following conditions can be caused:
1. the positioning function is inaccurate, for example, the wear elevation can not meet the design requirement;
2. the equipment commissioning function can not meet the technical requirements, for example, the logical operation of the equipment is wrong due to the fact that the position accuracy of the worn equipment is poor and the operation purpose cannot be achieved; when the equipment is abnormal, the equipment must be stopped for processing.
At present, the conventional method for repairing the wear of the shaft hole mainly comprises the following steps:
1. surfacing and polishing the worn part;
2. replacing a new spare part;
3. repairing with new product repairing agent, etc.
However, the above treatment method has the following drawbacks:
1. the wear part is repaired and polished by overlaying, the repair time is long, the datum is not easy to position, and the repair quality is poor;
2. whether a new spare part is replaced or not and whether the base part is positioned independently or not are judged, however, the replacement time of the large spare part is long, the spare part is wasted greatly, and the large equipment is moved due to the repair of a certain position and does not meet the production requirement;
3. the temporary repair is made of novel materials, the hole pattern is simple, but the working condition is poor, the stress is large, and the repair agent is easy to damage and lose functions in occasions with large vibration.
SUMMERY OF THE UTILITY MODEL
The technical problem solved by the utility model is as follows: the shaft hole abrasion repairing structure can realize quick repairing and is simple in structure.
The technical scheme adopted by the utility model for solving the technical problems is as follows: structure is repaired in shaft hole wearing and tearing, including former organism axle installation department, be provided with former shaft hole, its characterized in that on former organism axle installation department: the novel positioning shaft sleeve is fixedly arranged on the outer side surface of the original body shaft mounting part, a novel shaft hole is formed in the novel positioning shaft sleeve, and the novel shaft hole is coaxial with the original shaft hole; the new pin shaft is inserted into and positioned and matched with the new shaft hole on the newly-added positioning shaft sleeve.
Further, the method comprises the following steps: the original machine body shaft mounting part is provided with two parts, namely a left original machine body shaft mounting part and a right original machine body shaft mounting part, a mounting station is arranged between the left original machine body shaft mounting part and the right original machine body shaft mounting part, and original shaft holes on the left original machine body shaft mounting part and the right original machine body shaft mounting part are coaxially arranged; the two newly-added positioning shaft sleeves are arranged, one newly-added positioning shaft sleeve is arranged on the outer side surface of the left original machine body shaft mounting part, and the other newly-added positioning shaft sleeve is arranged on the outer side surface of the right original machine body shaft mounting part; and the new shaft holes on the two newly-added positioning shaft sleeves are coaxially arranged.
Further, the method comprises the following steps: the newly-added positioning shaft sleeve is fixedly arranged on the outer side surface of the original body shaft installation part in a welding mode.
The utility model has the beneficial effects that: the utility model has the advantages of simple and reliable structure and low cost, only needs to replace the original body shaft installation part by welding a corresponding newly-added positioning shaft sleeve, and can effectively and quickly solve the hidden trouble of equipment caused by shaft hole abrasion; moreover, the utility model realizes the reduction of production pause risks, safety risks and the influence of maintenance on production efficiency under the condition that the functions of the original equipment are not changed.
Drawings
FIG. 1 is a schematic view of a pin shaft and a shaft hole in normal condition;
FIG. 2 is a schematic view of a worn shaft hole;
FIG. 3 is a side view of FIG. 2;
FIG. 4 is a schematic view of a wear-repairing structure for an axial hole according to the present invention;
FIG. 5 is a front view of a newly added locating boss;
FIG. 6 is a side view of FIG. 5;
labeled as: the device comprises an original machine body shaft mounting part 1, a left original machine body shaft mounting part 11, a right original machine body shaft mounting part 12, an original shaft hole 2, a newly-added positioning shaft sleeve 3, a new shaft hole 4, a new pin shaft 5, an original pin shaft 6, a wear gap 7, a main body part 8 and a mounting part 9.
Detailed Description
The utility model is further described with reference to the following figures and detailed description.
It should be noted that, if there are directional indication terms, such as the terms of direction and orientation, above, below, left, right, front and back, in the present invention, for facilitating the description of the relative positional relationship between the components, the absolute position that is not the positional relationship between the related components and the components is specifically referred to, and is only used for explaining the relative positional relationship and the motion situation between the components in a specific posture, and if the specific posture is changed, the directional indication is changed accordingly. When the present invention relates to a number, such as "a plurality", "several", etc., two or more than two are specifically referred to.
As shown in fig. 1, the main body portion 8 and the mounting portion 9 are in a normal matching state with the original shaft hole 2 on the original body shaft mounting portion 1 through the corresponding original pin shaft 6 for achieving effective positioning connection and assembly, which is an ideal state of normal matching or design matching, and at this time, the corresponding original pin shaft 6 and the original shaft hole 2 keep an effective matching positioning relationship. However, along with the abrasion generated in the normal operation process of the equipment, the fit clearance between the original pin shaft 6 and the original shaft hole 2 is gradually increased, and then a corresponding abrasion clearance 7 is formed, as shown in fig. 2 and fig. 3; at this time, due to the increase of the fit clearance between the original pin shaft 6 and the original shaft hole 2, the assembly precision cannot continuously meet the design requirement, and if the abrasion is serious, the equipment operation fault is caused, so that the equipment needs to be repaired.
Referring to fig. 4, in order to show a structural schematic diagram after the technical scheme of the present invention is adopted for repair, a new positioning shaft sleeve 3 is arranged, and the new positioning shaft sleeve 3 is fixedly mounted on the outer side surface of the original body shaft mounting part 1, a new shaft hole 4 is arranged on the new positioning shaft sleeve 3, and the new shaft hole 4 is coaxial with the original shaft hole 2; meanwhile, a new pin shaft 5 is arranged to replace the original pin shaft 6, and the new pin shaft 5 is inserted into and positioned and matched with the new shaft hole 4 on the newly-added positioning shaft sleeve 3, so that the main body part 8 and the mounting part 9 are positioned and matched again. Therefore, the utility model can directly replace the matching of the original shaft hole 2 and the original pin shaft 6 by the matching of the new shaft hole 4 and the new pin shaft 5, thereby solving the abrasion problem of the original shaft hole 2; in addition, the original shaft hole 2 does not need to be subjected to surfacing, re-polishing and other treatments, so that the repairing operation condition can be effectively simplified; and the newly added positioning shaft sleeve 3 used for repairing the shaft sleeve is simple in structure, as shown in the attached drawings 5 and 6, only a gasket structure with certain thickness and wear-resisting strength is needed.
In addition, the new shaft hole 4 is coaxial with the original shaft hole 2 in the utility model, which means that the new shaft hole 4 is coaxial with the original shaft hole 2 in an unworn state, but not means that the original shaft hole 2 is coaxial after being abraded; only in this way, the axis of the new pin shaft 5 matched with the new shaft hole 4 can be ensured to be collinear with the axis of the original shaft hole 2 in the original unworn shape, and the installation precision of the main body part 8 and the installation part 9 after installation and matching is further ensured. The reason is that the worn primary shaft hole 2 may not be a circular hole, and in most cases an irregular hole shape, and therefore, on the one hand, the worn primary shaft hole 2 may not have a geometric line such as an axis, and on the other hand, even if it has an axis, its axis may have substantially deviated from the position corresponding to its theoretical design.
In addition, without loss of generality, because the newly-added positioning shaft sleeve 3 is fixed on the outer side surface of the original body shaft mounting part 1, when the new pin shaft 5 is assembled again after being repaired, the new pin shaft 5 needs to pass through the original shaft hole 2 and then be matched with the new shaft hole 4, and therefore the new pin shaft 5 generally needs to be arranged to be in a structure longer than the original pin shaft 6 so as to ensure that the new pin shaft can be effectively matched with the new shaft hole 4.
More specifically, referring to the drawings, the original body shaft mounting portions 1 are generally provided with one original body shaft mounting portion 11 on the left and one original body shaft mounting portion 12 on the right, and the original shaft holes 2 on the left original body shaft mounting portion 11 and the right original body shaft mounting portion 12 are coaxially arranged, and at the same time, a mounting station is provided between the left original body shaft mounting portion 11 and the right original body shaft mounting portion 12, and the corresponding mounting portions 9 are inserted into the mounting station through corresponding positions and then assembled through pins. Accordingly, in the present invention, in the case where the left original body shaft mounting portion 11 and the right original body shaft mounting portion 12 are provided as described above, two new positioning bushings 3 may be provided, one new positioning bushing 3 being provided on the outer side surface of the left original body shaft mounting portion 11 and the other new positioning bushing 3 being provided on the outer side surface of the right original body shaft mounting portion 12, as shown in fig. 4; of course, the new shaft holes 4 on the two newly-added positioning shaft sleeves 3 are coaxially arranged, so that the new pin shafts 5 can be effectively matched with the new shaft holes 4 on the two newly-added positioning shaft sleeves 3 coaxially.
More specifically, in general, the original body shaft mounting part 1 and the newly added positioning shaft sleeve 3 are both made of metal parts, so that the newly added positioning shaft sleeve 3 can be directly welded and fixed on the original body shaft mounting part 1 by welding, the operation can be simplified, and the method has the advantage of firm fixation after welding.
Claims (3)
1. Structure is repaired in shaft hole wearing and tearing, including former organism axle installation department (1), be provided with former shaft hole (2), its characterized in that on former organism axle installation department (1): the novel positioning shaft sleeve is characterized by further comprising a newly-added positioning shaft sleeve (3) and a newly-added pin shaft (5), wherein the newly-added positioning shaft sleeve (3) is fixedly arranged on the outer side surface of the original body shaft mounting part (1), a new shaft hole (4) is formed in the newly-added positioning shaft sleeve (3), and the new shaft hole (4) is coaxial with the original shaft hole (2); the new pin shaft (5) is inserted into and positioned and matched with the new shaft hole (4) on the newly added positioning shaft sleeve (3).
2. The shaft hole wear repair structure of claim 1, wherein: the original body shaft mounting part (1) is provided with two parts, namely a left original body shaft mounting part (11) and a right original body shaft mounting part (12), a mounting station is arranged between the left original body shaft mounting part (11) and the right original body shaft mounting part (12), and original shaft holes (2) on the left original body shaft mounting part (11) and the right original body shaft mounting part (12) are coaxially arranged; the number of the newly-added positioning shaft sleeves (3) is two, one newly-added positioning shaft sleeve (3) is arranged on the outer side surface of the left original body shaft mounting part (11), and the other newly-added positioning shaft sleeve (3) is arranged on the outer side surface of the right original body shaft mounting part (12); and the new shaft holes (4) on the two newly-added positioning shaft sleeves (3) are coaxially arranged.
3. The shaft hole wear repair structure of claim 1 or 2, wherein: the newly-added positioning shaft sleeve (3) is fixedly arranged on the outer side surface of the original body shaft installation part (1) in a welding way.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122377279.3U CN216097302U (en) | 2021-09-29 | 2021-09-29 | Shaft hole abrasion repairing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122377279.3U CN216097302U (en) | 2021-09-29 | 2021-09-29 | Shaft hole abrasion repairing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216097302U true CN216097302U (en) | 2022-03-22 |
Family
ID=80690003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122377279.3U Active CN216097302U (en) | 2021-09-29 | 2021-09-29 | Shaft hole abrasion repairing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216097302U (en) |
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2021
- 2021-09-29 CN CN202122377279.3U patent/CN216097302U/en active Active
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