CN216867279U - Taper sleeve and taper sleeve pin shaft assembly for coal mining machine - Google Patents
Taper sleeve and taper sleeve pin shaft assembly for coal mining machine Download PDFInfo
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- CN216867279U CN216867279U CN202220213492.2U CN202220213492U CN216867279U CN 216867279 U CN216867279 U CN 216867279U CN 202220213492 U CN202220213492 U CN 202220213492U CN 216867279 U CN216867279 U CN 216867279U
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Abstract
The utility model relates to a taper sleeve for a coal mining machine and a taper sleeve pin shaft assembly, wherein the taper sleeve is a cylindrical part, two ends of the taper sleeve are respectively a closed end and an open end, the outer rotary surface of the cylinder wall comprises a first outer surface and a second outer surface which are connected left and right, the inner rotary surface of the cylinder wall comprises a first inner surface and a second inner surface which are connected left and right, the first outer surface and the second outer surface are respectively a cylindrical surface and a conical surface, the diameter of the cylindrical surface is smaller when the cylindrical surface is closer to the open end, the first inner surface and the second inner surface are both conical surfaces, and the diameter of the cylindrical surface is larger when the cylindrical surface is closer to the open end, and the taper of the first inner surface is smaller than that of the second inner surface; the taper sleeve pin shaft assembly comprises a pin shaft and the taper sleeve, one end of the pin shaft is a cone, and the cone part of the pin shaft is inserted into the taper sleeve and is matched with the shaft hole formed in the first surface of the inner side. The utility model can greatly reduce the possibility of crushing and damaging the surface of the taper sleeve, reduce the labor intensity of workers and ensure the connection reliability between the rocker arm and the traction part.
Description
Technical Field
The utility model relates to a taper sleeve for a coal mining machine and a taper sleeve pin shaft assembly, and belongs to the technical field of mechanical positioning.
Background
The conical pin assembly has high conical surface centering precision and strong impact resistance and vibration resistance, so the conical pin assembly is commonly used for connecting a rocker arm of a coal mining machine and a traction part. The taper pin receives impact force from the rocker arm and transmits the impact force to the traction part through the taper sleeve. However, in the actual use process, the surface of the taper sleeve is often damaged by crushing, so that the connection reliability of the rocker arm and the traction is greatly reduced, and the taper sleeve after crushing deformation is bonded with the traction part shell, so that the taper sleeve is difficult to disassemble, the production on a mine is delayed, and the labor intensity of workers is increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a taper sleeve for a coal mining machine and a taper sleeve pin shaft assembly, which can greatly reduce the possibility of crushing and damaging the surface of the taper sleeve, reduce the labor intensity of workers and ensure the connection reliability between a rocker arm and a traction part.
The main technical scheme of the utility model is as follows:
the utility model provides a taper sleeve for coal-winning machine, it is cylindric part, its both ends are blind end and open end respectively, the outside surface of revolution of its section of thick bamboo wall includes that the outside first surface and the outside second surface that connect about, the inside surface of revolution of its section of thick bamboo wall includes that the inboard first surface and the inboard second surface that connect about, outside second surface and inboard second surface all are close to the open end, outside first surface is the face of cylinder, the outside second surface is the conical surface, and the diameter is littleer near the open end more, inboard first surface and inboard second surface are the conical surface, and the diameter is bigger near the open end more, the tapering of inboard first surface is less than the tapering of inboard second surface, the axial length of outside second surface and inboard second surface equals.
The end part of the outer side of the cylinder wall, which is close to the closed end, can be provided with a radial outward convex annular boss.
The root part of the inner side of the cylinder wall close to the closed end can be provided with an inner cylindrical surface which is connected with the first surface of the inner side left and right, and the diameter of the inner cylindrical surface is equal to the diameter of the small end of the first surface of the inner side.
The closed end can be provided with a plurality of screw holes at intervals.
The core of blind end is preferred to be equipped with central through-hole, the screw hole uses central through-hole as central circumference equipartition, central through-hole is equal diameter hole or shoulder hole.
A taper sleeve pin shaft assembly comprises a pin shaft and a taper sleeve for a coal mining machine, wherein one end of the pin shaft is a cone, the external taper of the cone part is equal to the internal taper of the first surface of the inner side of the taper sleeve for the coal mining machine, and the cone part of the pin shaft is inserted into the taper sleeve and forms shaft hole matching with the first surface of the inner side.
The axial length of the conical body portion is preferably greater than the axial length of the inner first surface.
The taper sleeve is fixedly connected with the pin shaft through a plurality of screws which axially extend, and the screws penetrate through the closed end of the taper sleeve and are screwed on the pin shaft.
Furthermore, both ends of the pin shaft are cones, the cone at each end is respectively matched with the shaft hole formed on the first surface of the inner side of the taper sleeve, and the cones at both ends are respectively fixedly connected with the corresponding taper sleeves through screws.
The hinge pin is preferably internally provided with a central through hole extending axially, and the hinge pin and taper sleeves at two ends of the hinge pin are fixedly connected axially by penetrating a long bolt and matching a nut.
The beneficial effects of the utility model are:
the outer second surface of the taper sleeve is arranged to be close to the small outer conical surface of the open end, the inner second surface of the taper sleeve is arranged to be close to the large inner conical surface of the open end, and the taper sleeve, the traction part of the coal mining machine matched with the taper sleeve and the pin shaft are basically free of contact force or have small contact force at the outer second surface and the inner second surface during working, so that the edge of the open end of the taper sleeve can be effectively prevented from being damaged by crushing, the bonding phenomenon between the taper sleeve and the traction part shell is prevented, and the problem that the taper sleeve is difficult to disassemble is avoided. Moreover, the second surface of the outer side and the second surface of the inner side of the taper sleeve are converted into guide surfaces which are respectively used for guiding the taper sleeve when the taper sleeve is installed to the traction part of the coal mining machine and when the taper sleeve is installed in the pin axial taper sleeve.
The taper of the inner first surface is smaller than but as close to the taper of the inner second surface as possible, when the inner first surface of the taper sleeve elastically deforms due to large stress, the inner second surface can gradually participate in bearing, so that the total bearing section is enlarged, the load born by unit length is reduced, and the total bearing capacity of the taper sleeve is improved.
Through the special design of different sections of the rotating surfaces inside and outside the taper sleeve, the possibility of crushing and damaging the surface of the taper sleeve is greatly reduced, the connection reliability of the rocker arm and the traction part of the coal mining machine is improved, and the workload of disassembly and replacement caused by crushing deformation is reduced, so that the labor intensity of workers is reduced.
Drawings
FIG. 1 is a schematic structural view of one embodiment of the drogue of the present invention;
FIG. 2 is a schematic view of the configuration of one embodiment of the taper sleeve pin assembly of the present invention in a mated state;
fig. 3 is a partially enlarged view a of fig. 2.
a. The taper sleeve 1 is a first outer surface; 2. an inboard first surface; 3. an inboard second surface; 4. an outer second surface; b. a pin shaft; c. a screw; d. a long bolt; e. and a nut.
Detailed Description
As shown in fig. 1-3, the utility model discloses a taper sleeve a (which may be simply referred to as a taper sleeve) for a coal mining machine, which is a cylindrical part, two ends of which are respectively a closed end (the left end of the taper sleeve shown in fig. 1) and an open end (the right end of the taper sleeve shown in fig. 1), an outer rotary surface of a cylinder wall of which comprises an outer first surface 1 and an outer second surface 4 which are connected left and right, an inner rotary surface of the cylinder wall of which comprises an inner first surface 2 and an inner second surface 3 which are connected left and right, and the outer second surface and the inner second surface are both adjacent to the open end.
The outer first surface 1 is a cylindrical surface, the axial length is L1, and when the taper sleeve is embedded into a taper sleeve mounting hole in a corresponding structural member (generally a traction part of a coal mining machine when the taper sleeve is used for the coal mining machine), the outer first surface and the taper sleeve mounting hole form a shaft hole for matching, so that the positioning and the fixing of the taper sleeve are realized. The outer second surface 4 is conical with an axial length L2 and a conical angle 2 x β with a smaller diameter closer to the open end. The outer second surface is arranged to be close to the small conical surface of the open end, so that the phenomenon of crushing and damage of the edge of the open end due to overlarge stress can be prevented.
The inner first surface 2 and the inner second surface 4 are conical surfaces having axial lengths L3 and L4, respectively, and have a larger diameter closer to the open end. The small end radius of the inner first surface 2 is r1 and the large end radius is r2, and the small end radius of the inner second surface 4 is r2 and the large end radius is r 3. The inner first surface 2 is mainly intended to cooperate with the pin b to receive the impact force P from the pin. The taper 2 α 1 of the inner first surface is preferably smaller than the taper 2 α 2 of the inner second surface. The inner second surface mainly plays a role in guiding the pin shaft when the taper sleeve and the pin shaft are assembled.
The taper of the inner second surface should be as close as possible to the taper of the inner first surface. The difference value between alpha 2 and alpha 1 can be determined according to the size and stress of the taper sleeve, so that when the first surface on the inner side generates elastic deformation due to larger stress, the second surface on the inner side can gradually participate in bearing, the total bearing section is enlarged, the load born by the unit length is reduced, and the total bearing capacity of the taper sleeve is improved.
L2 and L4 are preferably equal. During working, the taper sleeve, the traction part of the coal mining machine matched with the taper sleeve and the pin shaft basically have no contact force or have small contact forces at the outer second surface and the inner second surface, and the contact forces between the two pairs of surfaces cannot influence each other, so that the edge of the open end of the taper sleeve can be effectively prevented from being damaged by crushing.
Through the arrangement of the inner and outer four sections of the rotating surfaces of the taper sleeve, the possibility of crushing and damaging the surface of the taper sleeve is greatly reduced, the connection reliability of the rocker arm and the traction part of the coal mining machine is improved, and the workload of disassembly and replacement operation caused by crushing deformation is reduced, so that the labor intensity of workers is reduced.
The end part of the outer side of the cylinder wall, which is close to the closed end, is provided with a radially outward protruding annular boss which is used for axial positioning when the taper sleeve is embedded into a corresponding structural part. L1 starts from the end face of the annular boss near the open end as measured.
The root part of the inner side of the cylinder wall, which is close to the closed end, is provided with an inner cylindrical surface, the inner cylindrical surface is connected with the first surface of the inner side left and right, and the diameter of the inner cylindrical surface is equal to the diameter r1 of the small end of the first surface of the inner side. The inner cylindrical surface is provided with a section of inner cylindrical surface which can be used for cutter back-off during machining of the first surface on the inner side, so that the machining quality of the first surface on the inner side is ensured.
The closed end can be provided with a plurality of screw holes at intervals for installing a screw c to fix the taper sleeve and a pin shaft matched with the taper sleeve, and therefore, the corresponding end part of the pin shaft is also correspondingly provided with a threaded hole.
The core part of the closed end is preferably provided with a central through hole, and the screw holes are uniformly distributed by taking the central through hole as the central circumference. The central through hole can be an equal-diameter hole or a stepped hole and can be used for mounting a bolt.
The utility model also discloses a taper sleeve pin shaft assembly which comprises a pin shaft b and the taper sleeve a for the coal mining machine, wherein one end of the pin shaft is a cone, the external taper of the cone part is equal to the internal taper of the first surface on the inner side of the taper sleeve for the coal mining machine, and the cone part of the pin shaft is inserted into the taper sleeve and forms shaft hole matching with the first surface on the inner side. When the taper sleeve pin shaft assembly is used in a coal mining machine, the pin shaft is usually installed in a rocker arm, impact force from the rocker arm acts on the pin shaft, and the pin shaft transmits the force to the traction part.
The axial length of the conical body portion is preferably greater than the axial length of the inner first surface. When the inner side first surface 2 is elastically deformed due to bearing of a large external load, the inner side second surface 3 participates in bearing section by section from inside to outside, so that the total bearing section is increased, the load borne by the unit length is reduced, and the total bearing capacity of the taper sleeve is improved.
The taper sleeve is fixedly connected with the pin shaft through a plurality of screws c which axially extend, and the screws penetrate through the closed end of the taper sleeve and are screwed on the pin shaft.
Furthermore, both ends of the pin shaft are cones, the cone at each end is respectively matched with the shaft hole formed on the first surface of the inner side of the taper sleeve, and the cones at both ends are respectively fixedly connected with the corresponding taper sleeves through screws.
The pin shaft can be internally provided with a central through hole which extends axially, and the pin shaft and the taper sleeves positioned at the two ends of the pin shaft are fixedly connected axially by commonly penetrating a long bolt d and then matching a nut e. Correspondingly, the core of the pin shaft should also be provided with a through hole. The structure of the taper sleeves matched with the two ends of the pin shaft can be different, the central through hole of the left-end taper sleeve is an equal-diameter hole in fig. 3, the central through hole of the right-end taper sleeve is a stepped hole, and the counter bore is used for accommodating part of nuts.
Claims (10)
1. The utility model provides a taper sleeve for coal-winning machine which characterized in that: the cylinder part is a cylindrical part, two ends of the cylinder part are respectively a closed end and an open end, the outer rotary surface of the cylinder wall comprises an outer first surface and an outer second surface which are connected left and right, the inner rotary surface of the cylinder wall comprises an inner first surface and an inner second surface which are connected left and right, the outer second surface and the inner second surface are both close to the open end, the outer first surface is a cylindrical surface, the outer second surface is a conical surface, the diameter of the outer rotary surface close to the open end is smaller, the inner first surface and the inner second surface are conical surfaces, the diameter of the inner rotary surface close to the open end is larger, the taper of the inner first surface is smaller than that of the inner second surface, and the axial lengths of the outer second surface and the inner second surface are equal.
2. The taper sleeve for a coal cutter according to claim 1, wherein: and the end part of the outer side of the cylinder wall, which is close to the closed end, is provided with a radially outward convex annular boss.
3. The taper sleeve for a coal cutter according to claim 2, wherein: the root part of the inner side of the cylinder wall, which is close to the closed end, is provided with an inner cylindrical surface, the inner cylindrical surface is connected with the first surface of the inner side left and right, and the diameter of the inner cylindrical surface is equal to the diameter of the small end of the first surface of the inner side.
4. The taper sleeve for a coal cutter according to claim 1, 2 or 3, wherein: and a plurality of screw holes are arranged at intervals on the closed end.
5. The taper sleeve for a coal cutter according to claim 4, wherein: the core of blind end is equipped with central through-hole, the screw hole uses central through-hole as central circumference equipartition, central through-hole is equal diameter hole or shoulder hole.
6. The utility model provides a taper sleeve round pin axle subassembly which characterized in that: the taper sleeve for the coal mining machine comprises a pin shaft and the taper sleeve for the coal mining machine as claimed in any one of claims 1 to 5, wherein one end of the pin shaft is a cone, the external taper of the cone part is equal to the internal taper of the first surface of the inner side of the taper sleeve for the coal mining machine, and the cone part of the pin shaft is inserted into the taper sleeve and forms shaft hole matching with the first surface of the inner side.
7. The taper sleeve pin assembly according to claim 6, wherein: the axial length of the conical body part is greater than the axial length of the inner first surface.
8. The taper sleeve pin assembly according to claim 7, wherein: the taper sleeve is fixedly connected with the pin shaft through a plurality of screws which axially extend, and the screws penetrate through the closed end of the taper sleeve and are screwed on the pin shaft.
9. The taper sleeve pin assembly according to claim 6, 7 or 8, wherein: the two ends of the pin shaft are cones, the cone on each end is matched with the shaft hole formed in the first surface of the inner side of one taper sleeve, and the cones on the two ends are fixedly connected with the corresponding taper sleeves through screws.
10. The taper sleeve pin assembly of claim 9, wherein: the hinge pin is internally provided with a central through hole extending axially, and the hinge pin and taper sleeves positioned at two ends of the hinge pin are fixedly connected axially by a long bolt matched with a nut which is arranged in a penetrating way together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220213492.2U CN216867279U (en) | 2022-01-26 | 2022-01-26 | Taper sleeve and taper sleeve pin shaft assembly for coal mining machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220213492.2U CN216867279U (en) | 2022-01-26 | 2022-01-26 | Taper sleeve and taper sleeve pin shaft assembly for coal mining machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216867279U true CN216867279U (en) | 2022-07-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220213492.2U Active CN216867279U (en) | 2022-01-26 | 2022-01-26 | Taper sleeve and taper sleeve pin shaft assembly for coal mining machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216867279U (en) |
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- 2022-01-26 CN CN202220213492.2U patent/CN216867279U/en active Active
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