CN219950181U - Pin shaft fastening structure for roller cage shoe and roller cage shoe - Google Patents
Pin shaft fastening structure for roller cage shoe and roller cage shoe Download PDFInfo
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- CN219950181U CN219950181U CN202321466698.7U CN202321466698U CN219950181U CN 219950181 U CN219950181 U CN 219950181U CN 202321466698 U CN202321466698 U CN 202321466698U CN 219950181 U CN219950181 U CN 219950181U
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- pin shaft
- conical
- roller cage
- pin
- shaft
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- 230000004323 axial length Effects 0.000 abstract description 4
- 238000009434 installation Methods 0.000 description 11
- 238000005299 abrasion Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model discloses a pin shaft fastening structure for a roller cage shoe and the roller cage shoe, which comprises a middle support, an outer support and pin shafts connected to the middle support and the outer support, wherein the middle support and the outer support are correspondingly provided with a middle mounting hole and a side mounting hole for mounting the pin shafts, and two ends of the pin shafts are conical; the middle mounting hole and the pin shaft are provided with shaft sleeves, a conical expansion sleeve matched with the conical shaft end of the pin shaft is arranged between the side mounting hole and the pin shaft, the conical expansion sleeve is fixed on the pin shaft through bolts and gaskets, and the pin shaft is in interference fit with the side mounting hole through the conical expansion sleeve. According to the pin shaft fastening structure, two ends of the pin shaft are conical, the conical shaft ends of the pin shaft form interference fit with the outer side support through the conical expansion sleeve, the axial length of the interference fit is long, and the interference fit area is large; the shaft end of the pin shaft adopts an outer conical shape, so that the processing is convenient, and the pin shaft is convenient to replace after the pin shaft is worn.
Description
Technical Field
The utility model relates to a pin shaft fastening structure for a roller cage shoe and the roller cage shoe, and belongs to the technical field of roller cage shoes.
Background
The vertical shaft lifting container, in particular to a multi-rope friction type vertical shaft lifting container, mainly adopts roller cage shoes to vertically lift, guide and absorb impact load so as to ensure the safe and stable operation of the lifting container, and is widely applied to coal mines and non-coal mines. The main body structure of the conventional roller cage shoe is shown in fig. 1, and comprises a roller A, a roller support B, a buffer C and an installation underframe D, wherein the roller support B is hinged with the installation underframe D, and the upper end of the buffer C is hinged with the roller support B, and the lower end of the buffer C is hinged with the installation underframe D by adopting pin shafts.
The pin shaft fastening structure of the conventional roller cage shoe mainly adopts split pin type, clamping plate type and locking nut type, and in the fastening structure, the pin shaft and the side mounting hole are in clearance fit. When the roller cage shoe runs at a high speed along with the lifting container, under severe impact, the gap between the pin shaft and the side mounting hole is gradually increased due to abrasion, so that abnormal sound can be generated in the running process of the roller cage shoe, and the pin shaft fastening failure can be caused when severe, so that the roller cage shoe has a large potential safety hazard.
There are currently patented pin shaft assembly structure for roller cage ear and roller cage ear (CN 207551679U), the pin shaft assembled by the pin shaft assembly structure has: a first structure: the two ends of the pin shaft are provided with first expansion structures; or a second structure: the first end of the pin shaft is provided with a second expansion structure which is expanded based on axial tension, and the second end is provided with a conical outline; wherein the direction of axial tightening is directed from the second end to the first end. The disadvantages of the above structure are: after the shaft end of the pin shaft is expanded, the pin shaft and the side support form interference fit, and the pin shaft is not easy to replace after being worn; meanwhile, the conical hole at the shaft end of the pin shaft is positioned at the outer side of the circumferential surface counter bore, the axial length of the conical hole is short, and the interference fit area is small; the pin shaft end adopts an inner conical hole and is provided with a cylindrical surface counter bore, so that the structure is complex and the processing is inconvenient.
Disclosure of Invention
Aiming at the problems in the prior art, the utility model provides a pin shaft fastening structure for roller cage shoes, which improves the safety and reliability of pin shaft connection.
The utility model also provides a roller cage shoe provided with the pin shaft fastening structure.
In order to achieve the purpose, the pin shaft fastening structure for the roller cage ear comprises a middle support, an outer support and pin shafts connected to the middle support and the outer support, wherein the middle support and the outer support are correspondingly provided with middle mounting holes and side mounting holes for mounting the pin shafts, and two ends of the pin shafts are conical;
the middle mounting hole and the pin shaft are provided with shaft sleeves, a conical expansion sleeve matched with the conical shaft end of the pin shaft is arranged between the side mounting hole and the pin shaft, the conical expansion sleeve is fixed on the pin shaft through bolts and gaskets, and the pin shaft is in interference fit with the side mounting hole through the conical expansion sleeve.
As an improvement, the taper of the taper at the two ends of the pin shaft is 10-14 degrees, and the two ends of the pin shaft are provided with central threaded holes.
As an improvement, the shaft sleeve is a self-lubricating shaft sleeve.
As an improvement, the outer end of the conical expansion sleeve is provided with a mounting stop table, and the inner end of the conical expansion sleeve is provided with a conical hole matched with the conical shaft end of the pin shaft.
As an improvement, the hole wall of the conical hole is provided with an axial kerf, and the axial kerf penetrates through the hole wall of the conical hole.
As an improvement, the number of the axial slits is 2-6.
As an improvement, the axial kerfs are provided with 4 strips and are symmetrically distributed.
As an improvement, the conical hole of the conical expansion sleeve is in interference fit with the pin shaft.
In addition, the utility model also provides a roller cage shoe, and the roller cage shoe is provided with the pin shaft fastening structure.
Compared with the prior art, the pin shaft fastening structure for the roller cage shoe has the following beneficial effects:
the clearance fit mode of the pin shaft fastening structure of the conventional roller cage shoe is changed into the interference fit mode, so that the safety and reliability of the pin shaft fastening structure are improved.
The self-lubricating shaft sleeve is arranged between the middle mounting hole of the pin shaft fastening structure and the pin shaft, so that the impact resistance of the pin shaft is improved, the abrasion loss of the pin shaft is reduced, and the service life of the pin shaft is prolonged.
The pin shaft forms interference fit with the outer side support through the conical expansion sleeve, the axial length of the interference fit is long, and the interference fit area is large; the shaft end of the pin shaft adopts an outer conical shape, so that the processing is convenient, and in addition, the pin shaft is convenient to replace after the pin shaft is worn.
Drawings
FIG. 1 is a schematic diagram of the main structure of a conventional roller cage;
FIG. 2 is a schematic diagram of the structure of the present utility model;
FIG. 3 is a schematic view of a pin structure according to the present utility model;
FIG. 4 is a schematic view of the structure of the conical expansion sleeve according to the present utility model;
FIG. 5 is an E-E view of FIG. 4;
in the figure: A. the device comprises a roller, a roller support frame, a buffer, a mounting underframe, 1, a pin shaft, 1.1, a conical shaft end, 1.2, a central threaded hole, 2, a middle support, 3, an outer support, 4, a shaft sleeve, 5, a conical expansion sleeve, 5.1, a mounting stop table, 5.2, a conical hole, 5.3, a bolt hole, 5.4, an axial kerf, 5.5, a hole wall, 6 and a bolt.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the following detailed description of the technical solutions of the present utility model will be given by way of the accompanying drawings and the specific embodiments, and it should be understood that the specific features of the embodiments and the embodiments of the present utility model are detailed descriptions of the technical solutions of the present utility model, and not limiting the technical solutions of the present utility model, and the embodiments and the technical features of the embodiments of the present utility model may be combined with each other without conflict.
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 utility model belongs, and the terms used herein in this description of the utility model are for the purpose of describing particular embodiments only and are not intended to be limiting of the utility model.
In the description of the present utility model, it should be understood that the axial direction, the axis direction, etc. are based on the axis of the pin 1, unless otherwise specified, based on the pin 1, and the above description is merely for convenience of description and simplification of the description, and is not indicative or implying that the apparatus or element to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the protection of the present utility model.
The main body structure of the conventional roller cage shoe is shown in fig. 1, and comprises a roller A, a roller support B, a buffer C and a mounting underframe D, wherein the joints of the roller support B and the mounting underframe D, the buffer C and the roller support B, and the buffer C and the mounting underframe D are all hinged by adopting pin shafts 1. The middle support 2 and the outer support 3 are any two parts of the roller cage ear hinged by the pin shaft 1, for example, when the roller support frame B is connected with the installation underframe D, the installation underframe D can be used as the middle support 2, and the roller support frame B is used as the outer support 3; if the buffer C is connected with the roller support frame B, the buffer C may be used as the middle support 2, and the roller support frame B may be used as the outer support 3; the rest of the structure is similar.
As shown in fig. 2, a pin fastening structure for a roller cage shoe comprises a middle support 2, an outer support 3 and a pin 1 connected to the middle support 2 and the outer support 3;
the middle support 2 and the outer support 3 are correspondingly provided with a middle mounting hole and a side mounting hole for mounting the pin shaft 1, and two ends of the pin shaft 1 are conical;
a shaft sleeve 4 is arranged between the middle mounting hole and the pin shaft 1 and is used for prolonging the service life; a conical expansion sleeve 5 matched with the conical shaft end 1.1 of the pin shaft 1 is arranged between the side mounting hole and the pin shaft 1, the conical expansion sleeve 5 is fixed on the pin shaft 1 through a bolt 6 and a gasket, and the pin shaft 1 is in interference fit with the side mounting hole through the conical expansion sleeve 5. According to the utility model, the conical expansion sleeves 5 are fastened at the two ends of the pin shaft 1, so that the pin shaft 1 is limited in the middle mounting holes and the side mounting holes of the middle support 2 and the outer support 3, and the axial movement of the pin shaft 1 is avoided.
As an improvement of the embodiment, as shown in FIG. 3, the taper of the two ends of the pin shaft 1 is 10-14 degrees, the two ends of the pin shaft 1 are provided with central threaded holes 1.2, and the two ends of the pin shaft 1 are connected in the central threaded holes 1.2 by means of bolts 6, so that the conical expansion sleeves 5 can be stably arranged at the two ends of the pin shaft 1.
As an improvement of the embodiment, the shaft sleeve 4 is a self-lubricating shaft sleeve, so that the service life is effectively prolonged.
As an improvement of the embodiment, as shown in fig. 2, 4 and 5, the outer end of the conical expansion sleeve 5 is provided with a mounting stop table 5.1, the inner end of the conical expansion sleeve is provided with a conical hole 5.2 matched with the conical shaft end 1.1 of the pin shaft 1, the taper of the conical hole 5.2 is 10-14 degrees, the conical hole can be tightly matched with the conical shaft end 1.1, the hole wall 5.5 of the conical hole 5.2 is provided with an axial cutting joint 5.4, and the axial cutting joint 5.4 penetrates through the hole wall 5.5 of the conical hole 5.2. According to the conical expansion sleeve 5, the conical holes 5.2 are matched with the conical shaft ends 1.1 of the pin shafts 1, the conical expansion sleeve 5 is fastened based on connection of the bolts 6 and the gaskets with the pin shafts 1, meanwhile, the axial kerfs 5.4 are formed in the conical expansion sleeve 5, the adjacent hole walls cannot be pulled mutually and are easily spread, so that the hole walls 5.5 of the conical holes 5.2 are expanded at the two ends of the pin shafts 1, interference fit between the pin shafts 1 and the side mounting holes is achieved, the conical holes 5.2 of the conical expansion sleeve 5 can be adjusted to be expanded by the pin shafts 1 in the adjusting range of the bolts 6, meanwhile, the interference fit effect of the pin shafts 1 and the conical holes 5.2 is achieved, and the sustainable and reliable use of the pin shaft fastening structure is achieved.
As an improvement of the embodiment, as shown in fig. 4, the number of the axial slits 5.4 is 2-6, and it is further preferred that the axial slits 5.4 are provided with 4 slits and the 4 slits are symmetrically distributed about the axis, so that the processing is more convenient, and the tight connection between the conical hole 5.2 and the conical shaft end 1.1 of the pin shaft 1 can be ensured.
Finally, the utility model also provides a roller cage shoe, wherein the pin shaft fastening structure is arranged on the roller cage shoe.
When the buffer is used, the buffer C is connected with the roller support frame B, the buffer C can be used as a middle support 2, and the roller support frame B can be used as an outer support 3;
firstly, a self-lubricating shaft sleeve is installed in a middle support 2, then a middle installation hole on the middle support 2 is aligned with a side installation hole on an outer support 3, a pin shaft 1 is installed in the middle installation hole and the side installation hole, then a conical expansion sleeve 5 is coaxially arranged with the pin shaft 1, a bolt hole 5.3 on the conical expansion sleeve 5 corresponds to a central threaded hole 1.2 on the pin shaft 1, a bolt 6 and a gasket are installed in the bolt hole 5.3 and the central threaded hole 1.2, the gasket is located on the outer side of an installation stop table 5.1 of the conical expansion sleeve 5, the rotating bolt 6 adjusts the expansion of the pin shaft 1 in the conical hole 5.2 of the conical expansion sleeve 5 and expands the hole wall 5.5, so that the pin shaft 1 achieves interference fit in the side installation hole through the conical expansion sleeve 5, the fact that the pin shaft 1 is not easy to fall off is ensured, and the safety and reliability of connection of the pin shaft 1 are improved.
According to the pin shaft fastening structure, two ends of the pin shaft are conical, the conical shaft ends of the pin shaft form interference fit with the outer side support through the conical expansion sleeve, the axial length of the interference fit is long, and the interference fit area is large; the shaft end of the pin shaft adopts an outer conical shape, so that the processing is convenient, and the pin shaft is convenient to replace after the pin shaft is worn.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, or alternatives falling within the spirit and principles of the utility model.
Claims (9)
1. The pin shaft fastening structure for the roller cage ear comprises a middle support (2), an outer support (3) and pin shafts (1) connected to the middle support (2) and the outer support (3), and is characterized in that middle mounting holes and side mounting holes for mounting the pin shafts (1) are correspondingly formed in the middle support (2) and the outer support (3), and two ends of the pin shafts (1) are conical;
the novel anti-collision device is characterized in that a shaft sleeve (4) is arranged between the middle mounting hole and the pin shaft (1), a conical expansion sleeve (5) matched with the conical shaft end (1.1) of the pin shaft (1) is arranged between the side mounting hole and the pin shaft (1), the conical expansion sleeve (5) is fixed on the pin shaft (1) through a bolt (6) and a gasket, and the pin shaft (1) is in interference fit with the side mounting hole through the conical expansion sleeve (5).
2. The pin shaft fastening structure for the roller cage ear according to claim 1, wherein the taper of the two ends of the pin shaft (1) is 10-14 degrees, and the two ends of the pin shaft (1) are provided with central threaded holes (1.2).
3. The pin shaft fastening structure for a roller cage shoe according to claim 1, wherein the shaft sleeve (4) is a self-lubricating shaft sleeve.
4. The pin shaft fastening structure for the roller cage ear according to claim 1, wherein the outer end of the conical expansion sleeve (5) is provided with a mounting stop (5.1), and the inner end is provided with a conical hole (5.2) matched with the conical shaft end (1.1) of the pin shaft (1).
5. The pin shaft fastening structure for the roller cage ear according to claim 4, wherein the hole wall (5.5) of the conical hole (5.2) is provided with an axial kerf (5.4), and the axial kerf (5.4) penetrates through the hole wall (5.5) of the conical hole (5.2).
6. The pin shaft fastening structure for the roller cage shoe according to claim 5, wherein the number of the axial slits (5.4) is 2-6.
7. The pin shaft fastening structure for the roller cage ear according to claim 6, wherein the axial slits (5.4) are provided with 4 and are symmetrically distributed.
8. The pin shaft fastening structure for the roller cage ear according to claim 4, wherein an interference fit is adopted between the conical hole (5.2) of the conical expansion sleeve (5) and the pin shaft (1).
9. A roller cage shoe, characterized in that the roller cage shoe is provided with the pin fastening structure according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321466698.7U CN219950181U (en) | 2023-06-09 | 2023-06-09 | Pin shaft fastening structure for roller cage shoe and roller cage shoe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321466698.7U CN219950181U (en) | 2023-06-09 | 2023-06-09 | Pin shaft fastening structure for roller cage shoe and roller cage shoe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219950181U true CN219950181U (en) | 2023-11-03 |
Family
ID=88541977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321466698.7U Active CN219950181U (en) | 2023-06-09 | 2023-06-09 | Pin shaft fastening structure for roller cage shoe and roller cage shoe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219950181U (en) |
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2023
- 2023-06-09 CN CN202321466698.7U patent/CN219950181U/en active Active
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