CN216939230U - Assembly fixture of large-scale axle sleeve - Google Patents

Assembly fixture of large-scale axle sleeve Download PDF

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Publication number
CN216939230U
CN216939230U CN202220220176.8U CN202220220176U CN216939230U CN 216939230 U CN216939230 U CN 216939230U CN 202220220176 U CN202220220176 U CN 202220220176U CN 216939230 U CN216939230 U CN 216939230U
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CN
China
Prior art keywords
shaft
shaft sleeve
sleeve
roller
assembly fixture
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Active
Application number
CN202220220176.8U
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Chinese (zh)
Inventor
李学华
李晓龙
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Hefei Hualin Precision Technology Co ltd
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Hefei Hualin Precision Technology Co ltd
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Priority to CN202220220176.8U priority Critical patent/CN216939230U/en
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Publication of CN216939230U publication Critical patent/CN216939230U/en
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Abstract

The utility model aims to provide an assembly tool for a large-sized shaft sleeve, which can accurately assemble the shaft sleeve with a shaft core in the horizontal direction. The axle sleeve is supported by the travelling crane and the roller, so that the axis of the axle sleeve is coincided with the hole core of the installation hole of the equipment, then the axle sleeve is collided into the installation hole of the equipment, and the roller is also used for facilitating the movement of the axle sleeve in the process of forward movement of the axle sleeve.

Description

Assembly fixture of large-scale axle sleeve
Technical Field
The utility model relates to the technical field of installation of large-scale machinery, in particular to an assembly tool for a large-scale shaft sleeve.
Background
For some large-scale mechanical equipment, shaft sleeve parts mounted on the large-scale mechanical equipment are also large in tonnage, and the shaft sleeve is in transition fit or small-clearance fit when being matched with the equipment, so that when the shaft sleeve is installed in a mounting hole of the equipment, the assembly difficulty is high, the assembly precision is low, parts are easily damaged, and the requirements in production operation are difficult to meet.
The utility model named as a device for installing large shaft sleeve (with the number of granted publication: CN207386998U) discloses the following technical scheme: the hydraulic jack comprises a bottom end and an even number of lead screws which are vertically connected with each other in a detachable mode and are arranged on the periphery of a shaft sleeve mounting hole, the even number of lead screws are symmetrically arranged relative to the shaft sleeve mounting hole, a pressing plate which is horizontally arranged is mounted at the top end of each lead screw respectively, a nut and an adjusting pad are arranged on the lead screw on the upper side of the pressing plate, one end decibel of each pressing plate is aligned with the outer end face of the shaft sleeve, and hydraulic jacks with the same pressure are vertically arranged between the bottom face of each pressing plate and the outer end face of the shaft sleeve. The technical scheme is that the sleeve is already inserted into the sleeve hole, and the insertion of a section of stroke is completed, so that the labor-saving problem of completing the rear-section insertion is solved. In the initial assembly stage, the document of how to realize the accurate butt joint of the shaft sleeve to be inserted and the shaft sleeve mounting hole is not specifically described, which is extremely important because as a heavy component, the accurate butt joint of the shaft sleeve and the shaft sleeve mounting hole is a prerequisite, otherwise, the subsequent insertion and insertion process cannot be completed at all, and in addition, because the document relates to the assembly of shaft and hole components in transition fit or small clearance fit, in the insertion process, how to ensure the contact surfaces of the shaft sleeve and the hole component to be inserted are intact is also not related to the document. Especially for the interference fit or transition fit with small tolerance, the strong force application by the jack can cause the damage of the joint surface, so that the local crushing surface is accumulated, and the shaft sleeve cannot be inserted into the shaft sleeve mounting hole smoothly.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an assembly tool for a large shaft sleeve, which can accurately assemble the shaft sleeve with a shaft core in the horizontal direction.
In order to achieve the purpose, the utility model adopts the technical scheme that: the utility model provides an assembly fixture of large-scale axle sleeve, be provided with the supporting seat that is used for supporting the axle sleeve on the base, the upper end of supporting seat is rotated and is provided with the roller, the axle core of roller is located the horizontal plane and is perpendicular with the axial of axle sleeve, the top surface height of roller is highly unanimous with the bottom height of axle sleeve, still be provided with the support frame on the base, the upper end of support frame is fixed with the uide bushing, the axle core of uide bushing is parallel with the tube core of axle sleeve and is higher than the roller top surface height, the application of force axle is inserted and is arranged in the uide bushing and constitute along axial direction's sliding fit.
In the scheme, for heavy components, how to realize accurate butt joint of the shaft sleeve and the shaft sleeve mounting hole is a basic premise, especially for interference fit or transition fit with small tolerance, otherwise, a subsequent leading-in inserting process cannot be completed at all, the shaft sleeve is supported by the travelling crane and the roller to enable the axis of the shaft sleeve to be overlapped with a hole core of the mounting hole of the equipment, then the shaft sleeve is collided into the mounting hole of the equipment, and the roller is also beneficial to movement of the shaft sleeve in the process of forward movement of the shaft sleeve.
Drawings
FIG. 1 is a schematic view of the present invention in use;
FIG. 2 is a schematic view of a portion of the structure of FIG. 1;
fig. 3 is a right side view of fig. 2.
Detailed Description
As shown in fig. 1-3, a support 20 for supporting a shaft sleeve 1 is arranged on a base 10, a roller 21 is rotatably arranged at the upper end of the support 20, the axis of the roller 21 is positioned in a horizontal plane and is vertical to the axial direction of the shaft sleeve 1, the top surface of the roller 21 is as high as the bottom of the shaft sleeve 1, a support frame 31 is further arranged on the base 10, a guide sleeve 32 is fixed at the upper end of the support frame 31, the axis of the guide sleeve 32 is parallel to the tube core of the shaft sleeve 1 and is higher than the top surface of the roller 21, and a force application shaft 33 is inserted into the guide sleeve 32 and forms a sliding fit along the axial direction. The shaft sleeve 1 is placed above the rollers 21 of the supporting seat 20, the rollers not only can give enough supporting force to the shaft sleeve 1 to ensure that the axis of the shaft sleeve 1 is positioned in the horizontal direction, but also can enable the shaft sleeve 1 to smoothly move along the axis direction thereof due to the rolling characteristic of the rollers 21 when the force application shaft 33 impacts the shaft sleeve 1, and the shaft sleeve can be easily installed in the installation hole of the equipment 50.
As a preferred scheme of the present invention, the support base 20 includes two spaced vertical plates 22, the length direction of the vertical plates 22 is parallel to the tube core direction of the shaft sleeve 1, the upper plate edge of the vertical plate 22 is provided with a notch 221, the notch 221 is arranged such that the roller 21 can be directly placed into the notch 221 from above to realize installation, and can be directly taken out upwards when disassembled, because for a large-sized shaft sleeve 1, the size is large and the weight is heavy, the assembly tool for supporting the shaft sleeve 1 is also a tool with large size and heavy weight, which is very inconvenient in the moving process, if the assembly tool can be arranged into a structure convenient to disassemble, the assembly tool can be assembled when in use, the burden of workers can be greatly reduced, and the notch 221 is arranged for this purpose; the roller 21 comprises a large-diameter section and a small-diameter section, the two ends of the large-diameter section extend outwards, the small-diameter section is arranged in the notch 221 to form a running fit, the top of the large-diameter section is higher than the upper plate edge of the vertical plate 22, and the upper plate edge of the vertical plate 22 is prevented from interfering with the bottom of the shaft sleeve 1 to influence the movement of the shaft sleeve 1.
In order to reliably support the shaft sleeve 1 and have certain requirements on the length of the contact section of the shaft sleeve 1 and the shaft sleeve 1, the notches 221 are uniformly arranged in the length direction of the vertical plate 22 at intervals, and 4 rollers 21 are correspondingly arranged, so that the rollers 21 can support the rear half section of the shaft sleeve 1, and the front half section of the shaft sleeve 1 is hoisted by a crane, thereby ensuring that the axis of the shaft sleeve 1 is always positioned in the horizontal direction.
In order to further improve the horizontality of the axis of the sleeve 1 when mounted, the axial core of the force application shaft 33 is collinear with the tubular core of the sleeve 1.
The supporting seat 20 and the supporting frame 31 are arranged at intervals in the length direction of the base 10, and the end portion of the force application shaft 33 close to the supporting seat 20 is provided with a striking head 331 for preventing damage to the shaft sleeve 1, and the end portion far away from the supporting seat 20 is connected with a striking plate 332 for facilitating striking of a power mechanism.
The number of the guide sleeves 32 is 1 at each of both ends of the support frame 31 in the longitudinal direction, but the guide sleeves 32 may be made to have a through structure with both ends integrated, and the first embodiment is preferable, so that the reliability of the linear motion of the force application shaft 33 is further improved.
During the specific assembly, the method comprises the following steps:
A) the outer pipe orifice of the shaft sleeve 1 is sealed by a cover plate 3, the cover plate 3 is arranged to provide a part impacted by the force application shaft 33, and the movement of the cover plate 3 is the movement of the shaft sleeve 1;
B) the hanging ring 40 is sleeved on the periphery of the shaft sleeve 1 and locked, an upper hanging ring 41 of the hanging ring 40 is connected with a traveling crane, the traveling crane drives the front end of the shaft sleeve 1 to move to the position of an orifice of a mounting hole of the equipment 50, and the rear part of the shaft sleeve 1 is located on the roller 21, so that the front end of the shaft sleeve 1 is supported by the lifting of the traveling crane, and the rear end of the shaft sleeve 1 is supported by a bottom support of the roller 21, the stability of the posture of the shaft sleeve 1 is ensured, and at the moment, the axis of the shaft sleeve 1 is superposed with a hole core of the mounting hole of the equipment 50;
C) the collision plate 332 at the rear end of the force application shaft 33 is collided by the collision rod 61 of the forklift 60, the front end of the force application shaft 33 collides with the cover plate 3 and drives the front end of the shaft sleeve 1 to enter the mounting hole of the equipment 50, the axis of the shaft sleeve 1 before is coincided with the hole core of the mounting hole of the equipment 50, the force application shaft 33 is collided with the cover plate 3, so that the front end of the shaft sleeve 1 is installed in the mounting hole of the equipment 50, and the point is also the most difficult to control; after the front end of the sleeve 1 is fitted into the mounting hole of the apparatus 50, the latter operation is relatively easy.
For heavy components, it is a basic prerequisite how to achieve an exact abutment of the bushing with the bushing mounting hole, in particular for a tight-tolerance interference or transition fit, otherwise the subsequent insertion process cannot be completed at all, where the axis of the bushing 1 coincides with the bore of the mounting hole of the device 50 by means of the support of the runners and the rollers 21, and then the bushing 1 is driven into the mounting hole of the device 50, and the rollers 21 also contribute to the movement of the bushing 1 during the forward movement of the bushing 1.
In step a), before installing the cover plate, dry ice 2 is filled in the shaft sleeve 1, so that the outer diameter of the shaft sleeve 1 is shrunk, or the installation hole of the equipment 50 is heated to enlarge the inner diameter of the installation hole, or the installation hole of the equipment 50 is heated and the dry ice 2 is filled in the shaft sleeve 1 simultaneously, so that the assembly is convenient, the cover plate 3 is arranged to provide an impact part for the impact of the force application shaft 33 on one hand, and prevent the dry ice 2 from coming out on the other hand, and after the normal temperature is recovered, the dry ice 2 is volatilized, so that extra treatment is not needed.
In order to further improve the consistency of the central axis of the shaft sleeve 1 in the advancing process, a guide rod 51 is fixed on the end surface of the periphery of the mounting hole of the device 50, the rod length direction of the guide rod 51 is parallel to the tube core direction of the shaft sleeve 1, and the guide rod 51 is inserted into a guide hole 42 formed in the hanging ring 40 to form guide fit, so that the central axis of the shaft sleeve 1 cannot deviate in the advancing process.
Further, the guide rod 51 has many interval arrangements on the terminal surface of equipment 50, and the guiding hole 42 on the hanging ring 40 has also arranged a plurality ofly correspondingly, avoids the damage of faying face and causes local crumple face accumulation and more stupid can't insert the axle sleeve smoothly in the axle sleeve mounting hole, and the guiding hole 42 also can directly set up on central siphon 1 certainly, as long as can realize the guide effect with the cooperation of guide rod 51 can.

Claims (6)

1. The utility model provides an assembly fixture of large-scale axle sleeve which characterized in that: the base (10) is provided with a supporting seat (20) used for supporting the shaft sleeve (1), the upper end of the supporting seat (20) is rotatably provided with a roller (21), the shaft core of the roller (21) is positioned in the horizontal plane and is vertical to the axial direction of the shaft sleeve (1), the top surface height of the roller (21) is consistent with the bottom height of the shaft sleeve (1), the base (10) is further provided with a supporting frame (31), the upper end of the supporting frame (31) is fixedly provided with a guide sleeve (32), the shaft core of the guide sleeve (32) is parallel to the tube core of the shaft sleeve (1) and is higher than the top surface height of the roller (21), and a force application shaft (33) is inserted into the guide sleeve (32) and forms sliding fit along the axial direction.
2. The assembly fixture for the large shaft sleeve according to claim 1, characterized in that: the supporting seat (20) comprises two vertical plates (22) which are arranged at intervals, the length direction of the vertical plates (22) is parallel to the tube core direction of the shaft sleeve (1), notches (221) are formed in the upper plate edge of the vertical plates (22), the roller (21) comprises a large-diameter section and a small-diameter section, the two ends of the large-diameter section extend outwards, the small-diameter section is arranged in the notches (221) to form rotating fit, and the top of the large-diameter section is higher than the upper plate edge of the vertical plates (22).
3. The assembly fixture for large shaft sleeves according to claim 2, characterized in that: the number of the notches (221) is 4 in the length direction of the vertical plate (22) uniformly and at intervals, and 4 rollers (21) are correspondingly arranged.
4. The assembly fixture for large shaft sleeves according to claim 1, characterized in that: the axial core of the force application shaft (33) is collinear with the tubular core of the shaft sleeve (1).
5. The assembly fixture for large shaft sleeves according to claim 4, characterized in that: the supporting seat (20) and the supporting frame (31) are arranged at intervals in the length direction of the base (10), a collision head (331) is arranged at one end part of the force application shaft (33) close to the supporting seat (20), and a collision plate (332) is connected with one end part far away from the supporting seat (20).
6. The assembly fixture for large shaft sleeves according to claim 4, characterized in that: the guide sleeve (32) is respectively provided with 1 at the two ends of the support frame (31) in the length direction.
CN202220220176.8U 2022-01-25 2022-01-25 Assembly fixture of large-scale axle sleeve Active CN216939230U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202220220176.8U CN216939230U (en) 2022-01-25 2022-01-25 Assembly fixture of large-scale axle sleeve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202220220176.8U CN216939230U (en) 2022-01-25 2022-01-25 Assembly fixture of large-scale axle sleeve

Publications (1)

Publication Number Publication Date
CN216939230U true CN216939230U (en) 2022-07-12

Family

ID=82317939

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202220220176.8U Active CN216939230U (en) 2022-01-25 2022-01-25 Assembly fixture of large-scale axle sleeve

Country Status (1)

Country Link
CN (1) CN216939230U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114406602A (en) * 2022-01-25 2022-04-29 合肥华林精工科技有限公司 Assembling tool and assembling method for large shaft sleeve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114406602A (en) * 2022-01-25 2022-04-29 合肥华林精工科技有限公司 Assembling tool and assembling method for large shaft sleeve

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