Ceramic shaft capable of axially displacing

Abstract

The utility model discloses an axial displacement type ceramic shaft, and belongs to the technical field of ceramic shafts. Comprising a fixing sleeve sliding on the outer side of the ceramic shaft, a connecting sleeve is installed on the top face of the fixing sleeve, and the connecting sleeve slides on the outer side of the ceramic shaft. The connecting sleeve is respectively engaged with the connecting sleeve and the ceramic shaft; compared with a traditional ceramic shaft which is complex in structural design when axial displacement is achieved, through the simple and ingenious structure, such as matching of the T-shaped connecting ring and the connecting groove, matching of the limiting disc and the limiting block and the like, efficient axial displacement is achieved, and meanwhile structural complexity is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to ceramic shaft technical field, concretely is a kind of axial displacement type ceramic shaft. BACKGROUND

[0002] Ceramic shaft is widely used in many fields due to its high hardness, high strength, wear resistance, corrosion resistance and good heat insulation performance, such as high-speed motor, precision instrument, chemical equipment, etc. In some special working scenarios, ceramic shaft needs to realize axial displacement to meet the operation requirements of equipment under different working conditions.

[0003] At present, the structure of traditional ceramic shaft is relatively fixed, and it is difficult to flexibly realize axial displacement, or when realizing axial displacement, it will face problems such as difficulty in controlling displacement accuracy, reduction of reliability and increase of cost due to complex structure. For example, in some mechanical equipment that needs to frequently adjust the shaft position to adapt to different processing techniques, the existing ceramic shaft cannot conveniently change the axial position, which limits the performance and application range of the equipment. Therefore, it has important practical significance to develop an axial displacement type ceramic shaft to solve the above problems. SUMMARY

[0004] The utility model aims at providing an axial displacement type ceramic shaft to solve the problems raised in the background.

[0005] In view of the above problems, the technical scheme provided by the utility model is:

[0006] An axial displacement type ceramic shaft, comprising a shaft sleeve and a fixing member, the driving end of the shaft sleeve is connected, and the ceramic shaft is connected to the execution end.

[0007] Further, the inside of the shaft sleeve slides the ceramic shaft, four groups of key grooves are opened in the inside of the shaft sleeve, four groups of splines are installed on the outside of the ceramic shaft, the spline slides in the key groove, the spline cooperates with the key groove to limit the radial movement of the ceramic shaft, ensure that it can only slide in the axial direction, improve the accuracy and stability of displacement, and ensure the precision of equipment operation.

[0008] Further, the fixing member comprises a fixing sleeve sliding on the outside of the ceramic shaft, a connecting sleeve is installed on the top surface of the fixing sleeve, the connecting sleeve slides on the outside of the ceramic shaft, the connecting sleeve is engagedly connected with the shaft sleeve and the ceramic shaft respectively, and the design of the fixing sleeve and the connecting sleeve enables the ceramic shaft to be stably fixed at the required position after axial displacement, ensures that the ceramic shaft will not move randomly during equipment operation, and improves the reliability of equipment operation.

[0009] Further, the outer side of the connecting sleeve is provided with a first threaded groove, the bottom end of the shaft sleeve is provided with an opening, the connecting sleeve slides in the opening, the wall surface of the opening is provided with a first thread, the first thread and the first threaded groove are threadedly engaged, the threadedly engaged connection mode provides a stable and convenient to adjust fixing mode, the axial position of the ceramic shaft can be accurately controlled by rotating the connecting sleeve, and the connecting sleeve can be effectively prevented from loosening during equipment operation, so that the position of the ceramic shaft is stable.

[0010] Further, the inner wall of the connecting sleeve is provided with a second thread, the surface of the ceramic shaft is provided with a second threaded groove, the second thread and the second threaded groove are threadedly engaged, the threaded connection between the shaft sleeve and the connecting sleeve is matched, further enhancing the stability of the fixation, fixing the ceramic shaft from both inside and outside to prevent it from shaking in the axial and radial directions, and improving the accuracy of the equipment operation.

[0011] Further, the spiral direction of the thread is consistent with the rotation direction of the ceramic shaft during work.

[0012] Further, the length of the key groove is greater than the length of the spline, which provides sufficient axial displacement space for the ceramic shaft, ensures that the ceramic shaft can move freely within the range required by the equipment working condition, and at the same time ensures that the spline always has a certain matching length in the key groove, maintaining the stability of displacement.

[0013] Further, the bottom surface of the fixing sleeve is rotationally connected with a limiting disc, the limiting disc slides on the outside of the ceramic shaft, the inner wall of the limiting disc is provided with a limiting block, the outside of the ceramic shaft is provided with a limiting groove, the limiting block slides in the limiting groove, the cooperation of the limiting disc and the limiting block and the limiting groove limits the rotation of the limiting disc, so that it can only move axially.

[0014] Further, the top surface of the limiting disc is provided with a connecting ring, the bottom surface of the fixing sleeve is provided with a connecting groove, the connecting ring rotates in the connecting groove, so that the fixing sleeve cannot be separated from the ceramic shaft.

[0015] Further, the cross section of the connecting ring and the connecting groove is T-shaped, the T-shaped structure design increases the reliability of the connection, prevents the connecting ring from coming out of the connecting groove, and better transmits torque during rotation, ensuring the connection stability and rotation flexibility between the limiting disc and the fixing sleeve.

[0016] Compared with the prior art, the beneficial effects of the axial displacement type ceramic shaft are that: the axial displacement type ceramic shaft effectively solves the problem of axial displacement difficulty of the traditional ceramic shaft. Through the precise cooperation of the spline and the key groove, the ceramic shaft can smoothly slide axially in the shaft sleeve, and the operation is simple and flexible. Compared with the traditional structure, the displacement process is more stable and reliable, and the jamming, blocking and other phenomena caused by the complex structure in the traditional way are avoided, the design of the fixing sleeve and the connecting sleeve, and the double-thread engagement connection mode of the connecting sleeve, the shaft sleeve and the ceramic shaft provide a stable fixing effect for the ceramic shaft. When the equipment is running, even if affected by external forces such as vibration and impact, the ceramic shaft can remain in the required position and will not move randomly; compared with the complex structure design of the traditional ceramic shaft to realize axial displacement, the axial displacement type ceramic shaft of the utility model realizes efficient axial displacement while reducing the structural complexity through simple and ingenious structure, such as T-shaped connecting ring and connecting groove, cooperation of limiting disc and limiting block. This not only reduces the number of parts and processing difficulty, but also reduces the manufacturing cost. Moreover, the simple and reliable structure improves the overall reliability of the equipment, reduces the risk of failure caused by complex structure, and reduces the maintenance cost and difficulty. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The utility model discloses an axial displacement type ceramic shaft's three -dimensional structure schematic diagram is disclosed for the embodiment of the utility model;

[0018] Figure 2 The utility model discloses an axial displacement type ceramic shaft's three -dimensional structure schematic diagram is disclosed for the embodiment of the utility model;

[0019] Figure 3 The utility model discloses an axial displacement type ceramic shaft's three -dimensional structure schematic diagram is disclosed for the embodiment of the utility model;

[0020] Figure 4 The utility model discloses an axial displacement type ceramic shaft's three -dimensional structure schematic diagram is disclosed for the embodiment of the utility model.

[0021] In the drawing: 1, shaft sleeve;2, ceramic shaft;3, limiting groove;4, limiting disc;5, fixed sleeve;6, connecting ring;7, limiting block;8, connecting sleeve;9, first thread groove;10, second thread;11, spline;12, key groove;13, second thread groove;14, opening;15, first thread;16, connecting groove. DETAILED DESCRIPTION

[0022] Clearly, the described embodiments are merely a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0023] Please refer to Figure 1 Figure 4 The present application provides a technical scheme: an axial displacement type ceramic shaft, comprising a shaft sleeve 1 and a fixing part.

[0024] As an embodiment of the present application, further, the inside of the shaft sleeve 1 slides a ceramic shaft 2, four groups of key grooves 12 are arranged in the inside of the shaft sleeve 1, four groups of splines 11 are arranged on the outside of the ceramic shaft 2, the spline 11 slides in the key groove 12, the ceramic shaft 2 realizes axial displacement by the spline 11 sliding in the key groove 12 of the shaft sleeve 1, and the movement of the ceramic shaft 2 in other directions is limited.

[0025] As an embodiment of the present application, further, the fixing part comprises a fixing sleeve 5 sliding on the outside of the ceramic shaft 2, a connecting sleeve 8 is arranged on the top surface of the fixing sleeve 5, the connecting sleeve 8 slides on the outside of the ceramic shaft 2, the connecting sleeve 8 is engagedly connected with the shaft sleeve 1 and the ceramic shaft 2 respectively, when it is needed to adjust the position of the ceramic shaft 2, the engagement connection between the connecting sleeve 8 and the shaft sleeve 1 and the ceramic shaft 2 is loosened first, so that the ceramic shaft 2 can slide axially, and after being adjusted to a suitable position, the connecting sleeve 8 is engaged again.

[0026] As an embodiment of the present application, further, a first threaded groove 9 is arranged on the outside of the connecting sleeve 8, an opening 14 is arranged at the bottom end of the shaft sleeve 1, the connecting sleeve 8 slides in the opening 14, a first thread 15 is arranged on the wall surface of the opening 14, the first thread 15 is screw-engaged with the first threaded groove 9, when the connecting sleeve 8 is rotated, the connecting sleeve 8 moves axially in the opening 14 of the shaft sleeve due to the cooperation between the first thread 15 and the first threaded groove 9, and then the ceramic shaft 2 is moved or fixed.

[0027] As an embodiment of the present application, further, a second thread 10 is arranged on the inner wall of the connecting sleeve 8, a second threaded groove 13 is arranged on the surface of the ceramic shaft 2, the second thread 10 is screw-engaged with the second threaded groove 13, when the connecting sleeve 8 is rotated, the connecting sleeve 8 not only moves axially on the shaft sleeve 1, but also moves synchronously with the ceramic shaft 2 or fixes the ceramic shaft 2 through the second thread 13, and finally the ceramic shaft 2 and the shaft sleeve 1 are fixed together.

[0028] ​As an embodiment of the utility model, further, the length of the key groove 12 is greater than the length of the spline 11, the key groove 12 is longer than the spline 11, so that the ceramic shaft 2 is moved in the axial direction, the spline 11 will not be separated from the key groove 12, while ensuring displacement, the radial movement of the ceramic shaft 2 can be always limited by the cooperation of the spline 11 and the key groove 12, and the stable axial sliding of the ceramic shaft 2 is maintained.

[0029] As an embodiment of the utility model, further, the bottom surface of the fixed sleeve 5 is rotationally connected with the limiting disc 4, the limiting disc 4 is slid on the outside of the ceramic shaft 2, the inner wall of the limiting disc 4 is installed with the limiting block 7, the outside of the ceramic shaft 2 is provided with the limiting groove 3, and the limiting block 7 is slid in the limiting groove 3.

[0030] As an embodiment of the utility model, further, the top surface of the limiting disc 4 is installed with the connecting ring 6, the bottom surface of the fixed sleeve 5 is provided with the connecting groove 16, and the connecting ring 6 is rotated in the connecting groove 16.

[0031] As an embodiment of the utility model, further, the cross section of the connecting ring 6 and the connecting groove 16 is T-shaped, the connecting ring 6 and the connecting groove 16 of T-shaped structure are matched with each other, the convex and the recess of T-shaped structure are embedded with each other, so that the connecting ring 6 can be freely rotated in the connecting groove 16, and will not be separated from the connecting groove 16 in the axial direction, and the stable connecting relationship between the limiting disc 4 and the fixed sleeve 5 is ensured.

[0032] It should be noted that the standard parts used in the application file can be purchased from the market, and can be ordered according to the description and the drawings, and the specific connecting mode of each part adopts the conventional screw, rivet, welding and other conventional means in the prior art, and the machinery, parts and equipment adopt the conventional type in the prior art.

Claims

1. An axially displaceable ceramic shaft, characterized in that, Include: The shaft sleeve (1) is internally sliding with a ceramic shaft (2), and the inside of the shaft sleeve (1) is provided with four sets of key grooves (12). The outside of the ceramic shaft (2) is provided with four sets of splines (11), and the splines (11) slide in the key grooves (12); The fixing part includes a fixing sleeve (5) sliding outside the ceramic shaft (2), and the top surface of the fixing sleeve (5) is provided with a connecting sleeve (8) sliding outside the ceramic shaft (2). The connecting sleeve (8) is respectively engaged with the shaft sleeve (1) and the ceramic shaft (2).

2. The axially displaceable ceramic shaft of claim 1, wherein, The outside of the connecting sleeve (8) is provided with a first threaded groove (9), and the bottom end of the shaft sleeve (1) is provided with an opening (14). The connecting sleeve (8) slides in the opening (14), and the wall surface of the opening (14) is provided with a first thread (15). The first thread (15) and the first threaded groove (9) are threadedly engaged.

3. The axially displaceable ceramic shaft of claim 1, wherein, The inner wall of the connecting sleeve (8) is provided with a second thread (10), and the surface of the ceramic shaft (2) is provided with a second threaded groove (13). The second thread (10) and the second threaded groove (13) are threadedly engaged.

4. The axially displaceable ceramic shaft of claim 1, wherein, The length of the key groove (12) is greater than the length of the spline (11).

5. The axially displaceable ceramic shaft of claim 1, wherein, The bottom surface of the fixing sleeve (5) is rotatably connected with a limiting disc (4) sliding outside the ceramic shaft (2). The inner wall of the limiting disc (4) is provided with a limiting block (7), and the outside of the ceramic shaft (2) is provided with a limiting groove (3). The limiting block (7) slides in the limiting groove (3).

6. An axially displaceable ceramic shaft according to claim 5, wherein The top surface of the limiting disc (4) is provided with a connecting ring (6), and the bottom surface of the fixing sleeve (5) is provided with a connecting groove (16). The connecting ring (6) rotates in the connecting groove (16).

7. An axially displaceable ceramic shaft according to claim 6, wherein The cross section of the connecting ring (6) and the connecting groove (16) is T-shaped.

Images