CN218314497U

CN218314497U - Internal expanding clamp of ceramic cylinder sleeve

Info

Publication number: CN218314497U
Application number: CN202221701204.4U
Authority: CN
Inventors: 夏宝财; 徐艳; 章旭
Original assignee: Hefei Jingchuang Technology Co ltd
Current assignee: Hefei Jingchuang Technology Co ltd
Priority date: 2022-09-26
Filing date: 2022-09-26
Publication date: 2023-01-17
Anticipated expiration: 2032-09-26

Abstract

The utility model discloses an internal expanding anchor clamps of pottery cylinder liner, including the axle core, the cover is equipped with the internal expanding cover on the axle core, axle core one end slidable mounting has the taper pin, the conical surface on the axle core and the inner wall looks butt of internal expanding cover, the cover is equipped with the pottery cylinder liner on the outer wall of internal expanding cover. The utility model supports the expansion of the internal expansion sleeve through the arranged shaft core, so that the ceramic cylinder sleeve is expanded in the expansion process of the internal expansion sleeve, and the internal expansion sleeve is smooth in the expansion process, so that the problem that the ceramic cylinder sleeve is cracked due to uneven stress can not occur in the expansion process; the inner wall of the inner expansion sleeve is abutted to the conical pin, the nut is screwed, the nut can move towards the inner expansion sleeve on the threaded rod, the conical pin can extrude the inner wall of one end of the inner expansion sleeve, and therefore the inner wall of the other end of the inner expansion sleeve is extruded by the conical surface of the shaft core, and the two ends of the inner expansion sleeve are stressed uniformly in the expansion process.

Description

Internal expanding clamp of ceramic cylinder sleeve

Technical Field

The utility model belongs to an internal expanding anchor clamps technical field, concretely relates to internal expanding anchor clamps of ceramic cylinder liner.

Background

In petroleum drilling, a high-pressure slurry pump is the main core of a petroleum drilling workbench, a ceramic cylinder sleeve is an important part of the slurry pump, the coaxiality requirement of the excircle and the inner hole of the ceramic cylinder sleeve is high, the coaxiality of the ceramic cylinder sleeve is poor, eccentric wear is easily generated during the operation of a piston, the service lives of the cylinder sleeve and the piston are short, and the cost of pump stop and replacement is increased. At present, the processing mode commonly used is that the thimble is used for propping two chamfers for processing, but the ceramic chamfer precision of the ceramic cylinder sleeve is low, and the chamfers at the two ends are not concentric, so that the coaxiality requirement of an excircle and an inner hole cannot be ensured when the excircle is processed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an internal expanding anchor clamps of ceramic cylinder liner can solve the problem of proposing among the above-mentioned background art now.

The purpose of the utility model can be realized by the following technical scheme:

an internal expansion clamp of a ceramic cylinder sleeve comprises a shaft core, wherein an internal expansion sleeve is sleeved on the shaft core, a taper pin is slidably mounted at one end of the shaft core, a conical surface on the shaft core is abutted with the inner wall of the internal expansion sleeve, and a ceramic cylinder sleeve is sleeved on the outer wall of the internal expansion sleeve; the inner expansion sleeve comprises a first top plate and a second top plate, the first top plate and the second top plate are fixedly connected through a connecting plate, a plurality of uniformly distributed first grooves and second grooves are formed in the inner expansion sleeve, the end portions of the first grooves and the second grooves are connected with arc-shaped tail holes, the tail holes are formed in the surface of the connecting plate, and guide grooves are formed in the inner side wall of the second top plate.

Furthermore, a first limit pin is arranged on the conical surface of the shaft core, and the guide groove is connected with the first limit pin in a sliding mode.

Further, the taper pin includes the conical head, conical head one side fixedly connected with awl pole, the hole has all been seted up at the middle part of conical head and awl pole.

Furthermore, a limiting groove is formed in the conical rod, and the limiting groove is connected with the second limiting pin in a sliding mode.

Furthermore, the conical head is matched with the inner wall of the inner expansion sleeve in an abutting mode.

Furthermore, a nut is connected to a threaded rod fixedly mounted at one end of the shaft core in a threaded manner, and the nut is in butt fit with the end of the taper pin.

The utility model has the advantages that:

1. the axle core through setting up supports opening of internal expanding cover, thereby prop open the in-process through the internal expanding cover and strut the ceramic cylinder liner, and the internal expanding cover is comparatively level and smooth at the in-process that struts, thereby make ceramic cylinder liner can not appear the inhomogeneous and problem that splits of atress at the in-process that is strutted, taper pin butt through setting up on the inner wall of internal expanding cover, only need screw up the nut, the nut can move towards the direction of internal expanding cover on the threaded rod, the taper pin can extrude the one end inner wall of internal expanding cover, thereby make the other end inner wall of internal expanding cover extruded by the conical surface of axle core, make the internal expanding cover both ends atress evenly at the expanded in-process.

2. The top sheet I and the top sheet II at two ends of the internal expansion sleeve are expanded through the plurality of first grooves and the plurality of second grooves, so that the top sheet I and the top sheet II move towards the outer side of the circumference, and the top sheet I and the top sheet II are expanded to drive the ceramic cylinder sleeve to be expanded; the first grooves and the second grooves are arranged at intervals, so that the stress of the internal expansion sleeve is more uniform; through the sliding connection of the limiting groove and the limiting pin II, the taper pin cannot rotate in the moving process, and the nut cannot be separated from the surface of the threaded rod when moving on the threaded rod.

Drawings

The present invention will be further described with reference to the accompanying drawings.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the structure of the shaft core of the present invention;

fig. 3 is a sectional view of the internal expanding sleeve of the present invention;

fig. 4 is a side view of the internal expanding sleeve of the present invention;

fig. 5 is a schematic structural view of the taper pin of the present invention.

In the figure: 1. a shaft core; 111. a first limiting pin; 112. a second limiting pin; 12. a threaded rod; 2. an internal expanding sleeve; 211. a first top sheet; 212. a second topsheet; 22. a first groove; 23. a guide groove; 24. a second groove; 25. a connecting plate; 26. a tail hole; 3. a ceramic cylinder liner; 4. a taper pin; 41. an inner bore; 42. a conical head; 43. a tapered rod; 44. a limiting groove; 5. and a nut.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-5, an internal expansion fixture for a ceramic cylinder sleeve comprises a shaft core 1, wherein a first limit pin 111 is arranged on a conical surface of the shaft core 1, a second limit pin 112 is further arranged on the shaft core 1, and a threaded rod 12 is arranged at one end of the shaft core 1; the surface of the threaded rod 12 is provided with external threads, the shaft core 1 is sleeved with the internal expansion sleeve 2, one end of the shaft core 1 is slidably provided with the taper pin 4, one side of the taper pin 4 is provided with the nut 5, the nut 5 is in threaded connection with the threaded rod 12, the nut 5 is in butt joint with the taper pin 4, the conical surface on the shaft core 1 is in butt joint with the inner wall of the internal expansion sleeve 2, the end part of the taper pin 4 is in butt joint with the inner wall of the internal expansion sleeve 2, and the outer wall of the internal expansion sleeve 2 is sleeved with the ceramic cylinder sleeve 3; the axle core 1 through setting up supports opening of two 212 of the two 2 one end top sheets of internal expanding cover, thereby prop open the in-process to ceramic cylinder liner 3 through two 212 of top sheets, and internal expanding cover 2 is comparatively level and smooth at the in-process that struts, thereby make ceramic cylinder liner 3 can not appear the atress inhomogeneous and problem that splits at the in-process that is strutted, 4 butt taper pins through setting up on the inner wall of internal expanding cover 2, only need tighten nut 5, nut 5 can move towards the direction of internal expanding cover 2 on threaded rod 12, taper pin 4 can extrude the one end inner wall of internal expanding cover 2, thereby make the other end inner wall of internal expanding cover 2 extruded by the conical surface of axle core 1, make the even atress of internal expanding cover 2 both ends at the expanded in-process.

Referring to fig. 3 and 4, the internal expanding sleeve 2 comprises a first top plate 211 and a second top plate 212, the first top plate 211 and the second top plate 212 are fixedly connected through a connecting plate 25, a plurality of uniformly distributed first grooves 22 and second grooves 24 are formed in the internal expanding sleeve 2, the end portions of the first grooves 22 and the second grooves 24 are connected with arc-shaped tail holes 26, the tail holes 26 are arranged on the surface of the connecting plate 25, a guide groove 23 is formed in the inner side wall of the second top plate 212, and the guide groove 23 is in sliding connection with a first limit pin 111. Through the arrangement of the first grooves 22 and the second grooves 24, the first top plates 211 and the second top plates 212 at the two ends of the internal expansion sleeve 2 are expanded, so that the first top plates 211 and the second top plates 212 move towards the outer side of the circumference, and the first top plates 211 and the second top plates 212 are expanded to drive the ceramic cylinder sleeve 3 to be expanded. The first grooves 22 and the second grooves 24 are arranged at intervals, so that the stress of the internal expansion sleeve 2 can be uniform.

Referring to fig. 5, the taper pin 4 includes a taper head 42 with a circular truncated cone structure, a taper rod 43 is fixedly connected to one side of the taper head 42, inner holes 41 are respectively formed in the middle portions of the taper head 42 and the taper rod 43, the taper pin 4 is sleeved on the shaft core 1, and the taper head 42 of the taper pin 4 is in butt fit with the inner wall of the inner expanding sleeve 2. The top plate I211 is pressed by the arranged conical head 42, so that the top plate I211 is deformed, and the conical pin 4 is pushed when the nut 5 is fastened through the sliding connection between the conical pin 4 and the shaft core 1; the limiting groove 44 is formed in the conical rod 43, the limiting groove 44 is connected with the second limiting pin 112 in a sliding mode, and the nut 5 is arranged at one end, far away from the conical head 42, of the conical rod 43. Through the sliding connection of the limiting groove 44 and the limiting pin II 112, the taper pin 4 cannot rotate in the moving process, and the nut 5 cannot be separated from the surface of the threaded rod 12 when moving on the threaded rod 12; the inner circumference of the ceramic cylinder sleeve 3 is made of ceramic materials, and the outer side wall of the ceramic cylinder sleeve 3 is made of metal materials, so that the ceramic cylinder sleeve 3 can be conveniently unfolded.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention, and should not be considered as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.

Claims

1. An internal expansion clamp of a ceramic cylinder sleeve comprises a shaft core (1), and is characterized in that an internal expansion sleeve (2) is sleeved on the shaft core (1), a taper pin (4) is slidably mounted at one end of the shaft core (1), a conical surface on the shaft core (1) is abutted to the inner wall of the internal expansion sleeve (2), and a ceramic cylinder sleeve (3) is sleeved on the outer wall of the internal expansion sleeve (2); internal expanding cover (2) are including top plate (211) and top plate two (212), through connecting plate (25) fixed connection between top plate (211) and the top plate two (212), set up a plurality of evenly distributed's recess one (22) and recess two (24) on internal expanding cover (2), it is a plurality of the tip of recess one (22) and recess two (24) all is connected with curved tail hole (26), and is a plurality of tail hole (26) all set up in the surface of connecting plate (25), guide way (23) have been seted up on the inside wall of top plate two (212).

2. The internal expanding clamp for the ceramic cylinder sleeve as claimed in claim 1, wherein a first limit pin (111) is arranged on the conical surface of the shaft core (1), and the guide groove (23) is in sliding connection with the first limit pin (111).

3. The internal expanding clamp of the ceramic cylinder sleeve as claimed in claim 1, wherein the taper pin (4) comprises a taper head (42), a taper rod (43) is fixedly connected to one side of the taper head (42), and inner holes (41) are formed in the middle parts of the taper head (42) and the taper rod (43).

4. The internal expanding clamp for the ceramic cylinder sleeve as claimed in claim 3, wherein a limiting groove (44) is formed in the conical rod (43), and the limiting groove (44) is slidably connected with the second limiting pin (112).

5. The internal expansion clamp of the ceramic cylinder sleeve as claimed in claim 4, wherein the conical head (42) is in abutting fit with the inner wall of the internal expansion sleeve (2).

6. The internal expanding clamp of the ceramic cylinder sleeve as claimed in claim 1, wherein a nut (5) is connected to a threaded rod (12) fixedly mounted at one end of the shaft core (1) in a threaded manner, and the nut (5) is in abutting fit with a taper rod (43) at the end of the taper pin (4).