Stainless steel threaded shaft sleeve

Abstract

The utility model provides a stainless steel threaded shaft sleeve, which relates to the shaft sleeve field, and comprises a fixed sleeve, a connecting sleeve, a mounting block and a fixed seat, one end of the fixed sleeve is connected with the fixed seat, the mounting block is annularly welded on the outer wall of the fixed seat, and the connecting sleeve is rotatably connected in the fixed sleeve. A conical section and a threaded section are connected to one end of the connecting sleeve, inner heat dissipation holes are formed in the outer wall of the conical section, a through hole is formed in the threaded section, a bearing is fixed to the inner side of the fixing base, a threaded connection section is installed on the inner side of the bearing, and the threaded connection section is connected to the outer side of the threaded section. The utility model solves the problem that the abrasion phenomenon is still obvious due to inconvenience in heat dissipation of generated friction after the existing shaft sleeve is connected with the shaft core and inconvenience in reduction of the friction force at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of shaft sleeves, in particular to a stainless steel threaded shaft sleeve. Background Art

[0002] In moving parts, parts wear due to long-term friction. When the clearance between the shaft and the hole wears to a certain extent, the parts must be replaced. Therefore, when designing, the designer chooses materials with lower hardness and better wear resistance as the sleeve or bushing, which can reduce the wear of the shaft and the seat. When the sleeve or bushing is worn to a certain extent, it can be replaced, which can save the cost of replacing the shaft or seat. After searching, the prior art (application number: CN202221095062.1) records "a shaft sleeve with an anti-falling mechanism, wherein the outer wall of one end of the shaft core is provided with a shaft sleeve, the shaft core and the shaft sleeve are both cylindrical, one end of the shaft sleeve is integrally formed on the outer wall of one end of the shaft core, a cylindrical cavity is provided in the shaft sleeve, and the other end of the shaft sleeve is open, and positioning mechanisms are provided on both sides of the shaft sleeve, and an integrally formed convex ring is provided on the outer wall of one end of the shaft core; the utility model provides a positioning mechanism so that when the push plate is pushed in, the baffle of the positioning mechanism is automatically stuck in the positioning groove, thereby increasing the stability between the shaft sleeve and the shaft seat and reducing the probability of the shaft sleeve falling off, and by providing a push plate, the triggering of the positioning mechanism is simple, and when the shaft sleeve is inserted and installed, the push plate can be pushed to position it, without the need for additional auxiliary installation equipment, and the shaft sleeve is easy to install, while improving the stability of the shaft sleeve, shortening the installation time of the shaft sleeve."

[0003] However, although the shaft sleeve in the prior art has achieved easy installation between the shaft seat, it still has some shortcomings: the heat generated by the movement after the existing shaft sleeve is connected to the core shaft is not easy to dissipate in time, resulting in high internal temperature and accelerated wear. Secondly, there is an inevitable rotational friction factor after the core shaft and the shaft sleeve are connected. The prior art only reduces friction through lubrication, but causes excessive waste of lubricating fluid. Utility Model Content

[0004] In order to overcome the defects of the prior art, a stainless steel threaded sleeve is provided to solve the problem that after the existing sleeve is connected to the shaft core, it is not convenient to dissipate the heat of the friction generated, and it is not convenient to reduce the magnitude of the friction force, resulting in obvious wear.

[0005] To achieve the above-mentioned purpose, a stainless steel threaded sleeve is provided, comprising: a fixed sleeve, a connecting sleeve, a mounting block and a fixed seat, one end of the fixed sleeve is connected to the fixed seat, and the mounting block is welded to the outer wall of the fixed seat in a ring shape, and the connecting sleeve is rotatably connected to the inside of the fixed sleeve, one end of the connecting sleeve is connected to a tapered section and a threaded section, and the outer wall of the tapered section is provided with an inner heat dissipation hole, and the threaded section is provided with a through hole, a bearing is fixed to the inner side of the fixed seat, and a threaded section is installed on the inner side of the bearing, and the threaded section is connected to the outer side of the threaded section.

[0006] Furthermore, an outer wall of the fixing sleeve is provided with an outer heat dissipation hole, and the outer and inner positions of the outer heat dissipation hole correspond to those of the inner heat dissipation hole.

[0007] Furthermore, a key groove is provided on the inner wall of the connecting sleeve along the axial direction, and a gap is provided between the tapered section of the connecting sleeve and the inner wall of the fixing sleeve.

[0008] Furthermore, the mounting block is configured as a semi-cylindrical structure, a mounting hole is provided inside the mounting block, and an end portion of the mounting block away from the connecting sleeve extends outwardly beyond an end portion of the fixing seat on the same side.

[0009] Furthermore, the threaded section is fixedly inserted in the bearing, and one end of the threaded section extends outward beyond the outer end surface of the bearing.

[0010] Furthermore, a positioning hole is formed on the outer wall of the fixing seat, and the positioning hole radially extends inward to the outer wall of the screw connection section.

[0011] Furthermore, the outer port of the fixing seat is connected to a dust cover, and the dust cover is provided with a conical structure, and the interior of the dust cover is provided with air holes, and a waterproof breathable membrane is provided in the air holes.

[0012] The beneficial effects of the utility model are:

[0013] 1. During installation, insert the connecting sleeve into the fixed sleeve, and then rotate it to make the threaded section and the screw-connected section screwed together, then the connecting sleeve can be rotated and connected to the fixed sleeve, and then the mandrel is inserted and fixed in the connecting sleeve. When the mandrel is driven externally, the connecting sleeve is driven to rotate. When friction occurs between the connecting sleeve and the fixed sleeve, the friction heat generated is accelerated to dissipate heat through the inner heat dissipation holes and the outer heat dissipation holes, the gap between the tapered section and the fixed sleeve, and the through holes, thereby alleviating the accelerated wear caused by the high internal temperature;

[0014] 2. By using the bearing arranged inside the fixed seat, after the connecting sleeve is connected to the bearing, part of the sliding friction between the connecting sleeve and the fixed seat is converted into rolling friction, thereby reducing the rotational friction factor and further reducing wear. At the same time, by using the dust cover, the bearing inside the fixed seat is waterproof and dustproof after the mounting block is fixed, thereby achieving the effect of self-maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall cross-sectional structure of an embodiment of the utility model.

[0016] Figure 2 For the utility model embodiment Figure 1 Schematic diagram of the structure at point A in the middle.

[0017] Figure 3 The figure is a schematic diagram of the appearance structure of the connecting sleeve of the embodiment of the utility model.

[0018] Figure 4 This is a schematic diagram of the appearance structure of the fixing seat of an embodiment of the utility model.

[0019] In the figure: 1. fixing sleeve; 11. external heat dissipation hole; 2. connecting sleeve; 21. keyway; 22. tapered section; 23. internal heat dissipation hole; 24. threaded section; 25. through hole; 3. mounting block; 31. mounting hole; 4. fixing seat; 41. bearing; 42. screw section; 43. dust cover; 431. waterproof breathable membrane; 44. positioning hole. DETAILED DESCRIPTION

[0020] Reference Figures 1 to 4 As shown, the utility model provides a stainless steel threaded sleeve, comprising: a fixed sleeve 1, a connecting sleeve 2, a mounting block 3 and a fixed seat 4, one end of the fixed sleeve 1 is connected to the fixed seat 4, and the mounting block 3 is welded to the outer wall of the fixed seat 4 in a ring shape, and the connecting sleeve 2 is rotatably connected to the inside of the fixed sleeve 1, one end of the connecting sleeve 2 is connected to a tapered section 22 and a threaded section 24, and the outer wall of the tapered section 22 is provided with an inner heat dissipation hole 23, and the threaded section 24 is provided with a through hole 25, a bearing 41 is fixed to the inner side of the fixed seat 4, and a threaded section 42 is installed on the inner side of the bearing 41, and the threaded section 42 is connected to the outer side of the threaded section 24.

[0021] In this embodiment, the fixing sleeve 1, the connecting sleeve 2, the mounting block 3 and the fixing seat 4 constitute the main structure of the stainless steel threaded sleeve involved in this application.

[0022] Specifically, the outer diameter of the fixing seat 4 is greater than the outer diameter of the fixing sleeve 1 .

[0023] Specifically, the outer ring of the bearing 41 is fixedly nested with the inner wall of the fixing seat 4, and the threaded section 42 is inserted and fixed to the inner ring of the bearing 41, so that the threaded section 42 can rotate freely.

[0024] Specifically, the through hole 25 axially penetrates the connecting sleeve 2 , the tapered section 22 and the threaded section 24 , and the inner diameter of the through hole 25 is different in each section structure.

[0025] like Figure 1 and Figure 4As shown, the outer wall of the fixing sleeve 1 is provided with an outer heat dissipation hole 11, and the outer and inner positions of the outer heat dissipation hole 11 correspond to the inner and outer positions of the inner heat dissipation hole 23, the inner wall of the connecting sleeve 2 is provided with a key groove 21 along the axial direction, and a gap is provided between the tapered section 22 of the connecting sleeve 2 and the inner wall of the fixing sleeve 1, the mounting block 3 is set as a semi-cylindrical structure, and a mounting hole 31 is provided inside the mounting block 3, and the end of the mounting block 3 away from the connecting sleeve 2 extends outward beyond the end of the fixing seat 4 on the same side.

[0026] As a preferred embodiment, by providing the connecting sleeve 2, after the core shaft is connected thereto, the entirety is inserted into the fixing sleeve 1 and the fixing seat 4, and then the installation can be achieved by rotating the screw connection, which is a relatively convenient process.

[0027] As a preferred embodiment, a step difference is provided between the outer end of the mounting block 3 and the fixing seat 4 so that after the mounting block 3 is fixed, a heat dissipation space is provided on one side of the fixing seat 4 .

[0028] like Figure 1 and Figure 2 As shown, the threaded section 42 is fixedly inserted in the bearing 41, and one end of the threaded section 42 extends outward beyond the outer end surface of the bearing 41, a positioning hole 44 is provided on the outer wall of the fixing seat 4, and the positioning hole 44 extends radially inward to the outer wall of the threaded section 42, the outer port of the fixing seat 4 is connected to a dust cover 43, and the dust cover 43 is provided with a conical structure, and an air hole is provided inside the dust cover 43, and a waterproof breathable membrane 431 is provided in the air hole.

[0029] Specifically, the positioning hole 44 is provided in the space between the mounting blocks 3 , and the positioning hole 44 is located at a hole position on the outer wall of the screw connection section 42 , and is provided as a threaded hole.

[0030] As a preferred embodiment, by setting the positioning hole 44, before installing the connecting sleeve 2, the threaded hole on the screw-on section 42 is penetrated by the bolt, thereby keeping the screw-on section 42 in a stable state, and then the screw-on connection can be achieved by rotating the threaded section 24 of the connecting sleeve 2, and the bolt can be removed after the screw-on connection.

[0031] When in use, the connecting sleeve is inserted into the fixed sleeve, and then rotated to make the threaded section and the screw section screwed together, and then the connecting sleeve can be rotatably connected to the fixed sleeve, and then the core shaft is inserted and fixed in the connecting sleeve, and the connecting sleeve is driven to rotate when the core shaft is driven externally. When friction occurs between the connecting sleeve and the fixed sleeve, the friction heat generated is accelerated to dissipate heat through the inner heat dissipation holes and the outer heat dissipation holes, the gap between the tapered section and the fixed sleeve, and the through holes, thereby alleviating the accelerated wear caused by the high internal temperature; by using the bearing arranged inside the fixed seat, after the connecting sleeve is connected to the bearing, part of the sliding friction between the connecting sleeve and the fixed seat is converted into rolling friction, thereby reducing the rotational friction factor and further reducing wear. At the same time, by using the dust cover, the bearing inside the fixed seat is waterproof and dustproof after the mounting block is fixed, thereby achieving the effect of self-maintenance.

[0032] The stainless steel threaded shaft sleeve of the utility model can effectively solve the problem that after some shaft sleeves are connected to the shaft core, it is not convenient to dissipate the heat of the friction generated, and it is not convenient to reduce the size of the friction force, resulting in the problem that the wear phenomenon is still relatively obvious. On the basis of the existing stainless steel threaded shaft sleeve technology, it increases the effect of rapid heat dissipation and reduction of friction loss, thereby extending the service life of the shaft sleeve.

Claims

1. A stainless steel threaded sleeve, comprising: A fixing sleeve (1), a connecting sleeve (2), a mounting block (3) and a fixing seat (4), characterized in that one end of the fixing sleeve (1) is connected to the fixing seat (4), and the mounting block (3) is welded to the outer wall of the fixing seat (4) in an annular shape, and the connecting sleeve (2) is rotatably connected to the inside of the fixing sleeve (1), one end of the connecting sleeve (2) is connected to a conical section (22) and a threaded section (24), and the outer wall of the conical section (22) is provided with an inner heat dissipation hole (23), and the threaded section (24) is provided with a through hole (25), a bearing (41) is fixed on the inner side of the fixing seat (4), and a threaded section (42) is installed on the inner side of the bearing (41), and the threaded section (42) is connected to the outer side of the threaded section (24).

2. A stainless steel threaded sleeve according to claim 1, characterized in that: The outer wall of the fixing sleeve (1) is provided with an outer heat dissipation hole (11), and the outer and inner positions of the outer heat dissipation hole (11) correspond to those of the inner heat dissipation hole (23).

3. A stainless steel threaded sleeve according to claim 1, characterized in that: The inner wall of the connecting sleeve (2) is provided with a keyway (21) along the axial direction, and a gap is provided between the conical section (22) of the connecting sleeve (2) and the inner wall of the fixing sleeve (1).

4. A stainless steel threaded sleeve according to claim 1, characterized in that: The mounting block (3) is configured as a semi-cylindrical structure, a mounting hole (31) is provided inside the mounting block (3), and an end of the mounting block (3) away from the connecting sleeve (2) extends outwardly beyond an end of the fixing seat (4) on the same side.

5. A stainless steel threaded sleeve according to claim 1, characterized in that: The threaded section (42) is fixedly inserted in the bearing (41), and one end of the threaded section (42) extends outward beyond the outer end surface of the bearing (41).

6. A stainless steel threaded sleeve according to claim 1, characterized in that: The outer wall of the fixing seat (4) is provided with a positioning hole (44), and the positioning hole (44) extends radially inward to the outer wall of the screw connection section (42).

7. A stainless steel threaded sleeve according to claim 1, characterized in that: The outer port of the fixing seat (4) is connected to a dust cover (43), and the dust cover (43) is provided with a conical structure, and an air hole is opened inside the dust cover (43), and a waterproof breathable membrane (431) is provided in the air hole.

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