An axial interference fit shaft

Abstract

An axial interference fit shaft comprises a core shaft, a carbon fiber sleeve, upper and lower clamps at the mouth, a right-angle joint, and a stretching mechanism; one end of the core shaft is disposed within the stretching mechanism, the end of the core shaft located within the stretching mechanism is connected to a first joint, one end of the core shaft passes through the stretching mechanism and is disposed within the carbon fiber sleeve, one end of the carbon fiber sleeve is fitted with the stretching mechanism, and the other end of the carbon fiber sleeve is engaged with the upper and lower clamps at the mouth; a first threaded hole is formed at the end of the core shaft close to the stretching mechanism, an internal hole is formed within the core shaft, the internal hole is connected to the first threaded hole and is located on the same transverse axis, a third threaded hole is formed at the end of the core shaft away from the stretching mechanism, and the right-angle joint is engaged with the inner thread of the third threaded hole. The core shaft of the present invention is not susceptible to relative displacement with the carbon fiber sleeve under temperature changes.

Description

Technical Field

[0001] The invention relates to an improvement of a shaft processing technology, belongs to the field of mechanical processing, and particularly relates to an axial interference fit shaft. Background Art

[0002] Maritime cranes are lifting equipment specially designed for ships or offshore facilities. They usually need to work under strict environmental conditions, including strong winds, waves and changeable climatic conditions. The side beams of maritime cranes have extremely high requirements on weight and bending resistance. In order to improve its bending resistance within the specified weight range, a carbon fiber sleeve is added to the periphery. However, in actual use, due to temperature changes and different linear expansion coefficients of the materials, the core shaft expands and contracts due to heat and cold, resulting in relative displacement between the core shaft of the maritime crane side beam and the carbon fiber sleeve, thus forming a weak point, affecting the bending resistance and overall safety of the side beam.

[0003] A Chinese patent application with application number CN201711041011.4 and application date October 21, 2017 discloses an interference fit shaft-hole assembly device, including a support platform, on which a plurality of guide rods are fixed, an upper frame is fixed at the upper end of the guide rods, a slide is installed on the guide rods, and a hydraulic jack is provided between the slide and the frame. The hydraulic jack can drive the slide to move close to the plane of the support platform. When in use, the pipe sleeve can be placed on the support platform, and then the shaft is inserted into the pipe sleeve, the hydraulic jack is started, and the shaft is inserted into the pipe sleeve using the hydraulic jack to realize the assembly of the interference fit shaft and the hole. However, the above solution does not solve the problem that the core shaft is prone to relative displacement with the carbon fiber sleeve under temperature changes.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of this patent application, and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the Invention

[0005] The purpose of the present invention is to overcome the problem in the prior art that the core shaft is prone to relative displacement with the carbon fiber sleeve under temperature changes, and to provide an axial interference fit shaft in which the core shaft is not prone to relative displacement with the carbon fiber sleeve under temperature changes.

[0006] To achieve the above objectives, the technical solution of the present invention is: an axial interference fit shaft, the axial interference fit shaft comprising a core shaft, a carbon fiber sleeve, upper and lower clamps at the mouth, a right-angle joint and a stretching mechanism;

[0007] One end of the mandrel is arranged in the stretching mechanism, the end of the mandrel located in the stretching mechanism is connected to the first joint, one end of the mandrel passes through the stretching mechanism and is arranged in the carbon fiber sleeve, one end of the carbon fiber sleeve is fitted with the stretching mechanism, and the other end of the carbon fiber sleeve is clamped with the upper and lower clamps of the mouth;

[0008] A first threaded hole is formed at one end of the mandrel close to the stretching mechanism, an internal hole is formed in the mandrel, the internal hole is connected to the first threaded hole and is located on the same transverse axis, and a third threaded hole is formed at one end of the mandrel away from the stretching mechanism, and a right-angle joint is fitted in the inner thread of the third threaded hole;

[0009] The stretching mechanism includes a base, a stretching piece, an adapter, and a connecting plate. A stud is provided transversely through the base. One end of the stud passes through the side of the base and is provided with a stretching piece. The other end of the stud is connected to one end of the adapter. The other end of the adapter is connected to one end of the core shaft through multiple sets of bolts. Upper and lower gaskets are provided on the side of the connecting plate.

[0010] The stud is coaxially arranged with the core shaft.

[0011] The core shaft includes a connecting end and a shaft body, one end of the connecting end is connected to the other end of the adapter, and the other end of the connecting end is connected to one end of the shaft body;

[0012] One end of the shaft body passes through the connecting plate;

[0013] The distance between one end of the shaft body close to the connecting plate and the end faces of the upper and lower clamps at the mouth is less than the length of the carbon fiber sleeve.

[0014] The base includes a convex plate, a circular inner plate and a side plate. The top of the convex plate is embedded with a circular inner plate with an opening facing right. The top of the convex plate is located on the outer side of the circular inner plate and is surrounded by a side plate.

[0015] A through hole is provided on the right side of the side plate, and the through hole is communicated with the inner cavity of the circular inner plate.

[0016] A connecting plate is provided between the right side of the top of the convex plate and the right side of the side plate, and the connecting plate is provided corresponding to the through opening;

[0017] The connecting plate is connected to the convex plate and the side plate by multiple sets of fixing bolts;

[0018] The circular inner plate is hollow.

[0019] The adapter seat includes a seat body and a mounting plate, the left end of the seat body is connected to the right end of the mounting plate, the other end of the stud passes through the mounting plate and is connected to the mounting plate by a bolt, and the right end of the seat body is connected to one end of the connecting end;

[0020] There is a gap between the stud and the seat body.

[0021] The stretching member includes a disc spring assembly and a pressure sensor. The disc spring assembly is sleeved on the outer side of the stud, and the disc spring assembly is connected to the pressure sensor.

[0022] The disc spring assembly includes a sleeve, eight sets of disc springs and a nut. A second threaded hole is opened on the side of the sleeve, and a stud is inserted into the second threaded hole.

[0023] The outer periphery of the stud is located on the left side of the sleeve and is threadedly matched with a nut. Eight groups of disc springs are arranged on the outer periphery of the sleeve, and the disc spring on the far right is connected to the pressure sensor.

[0024] A conical washer is embedded on the left side of the side plate, and the conical washer is connected to the spherical washer by bolts;

[0025] The spherical washer is located between the pressure sensor and the side plate.

[0026] A fixing seat is installed at one end of the carbon fiber sleeve close to the connecting plate, and upper and lower gaskets are provided between the connecting end and the fixing seat;

[0027] The fixing seat is embedded in the connecting plate.

[0028] The diameters of the shaft body, the connecting end and the fixing seat are in an increasing trend.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] 1. In an axial interference fit shaft of the present invention, one end of the core shaft is arranged in a stretching mechanism, and one end of the core shaft located in the stretching mechanism is connected to the first joint, and one end of the core shaft is arranged in the carbon fiber sleeve after passing through the stretching mechanism, and one end of the carbon fiber sleeve is fitted with the stretching mechanism, and the other end of the carbon fiber sleeve is clamped and matched with the upper and lower clamps at the mouth. When in use, the core shaft is first installed in the carbon fiber sleeve by cold sleeve, and the tail end face of the core shaft fits with the end face of the carbon fiber sleeve. Then hot water is injected into the first joint, and the hot water flows back to the pump station through the holes inside the core shaft in turn, and the core shaft is elongated by heating. Upper and lower gaskets are installed from both sides during the heating process; when the upper and lower gaskets are installed on the core shaft, the heating is stopped so that the distance from the tail end face of the core shaft to the end face of the upper and lower clamps at the mouth is less than the length of the carbon fiber sleeve, ensuring that the core shaft and the carbon fiber sleeve are axially interference fit after assembly, and the core shaft and the carbon fiber sleeve are axially interference structures, which will generate tensile stress inside to resist the stress generated by temperature increase, and ensure that the core shaft mouth is not separated from the carbon fiber sleeve. Therefore, the core shaft of the present invention is not likely to generate relative displacement with the carbon fiber sleeve under temperature changes.

[0031] 2. In an axial interference fit shaft of the present invention, a stretching mechanism includes a base, a stretching piece, an adapter seat, and a connecting plate. A stud is provided transversely through the base, one end of the stud passes through the side of the base and a stretching piece is provided. The other end of the stud is connected to one end of the adapter seat, and the other end of the adapter seat is connected to one end of the core shaft through multiple sets of bolts. Upper and lower washers are provided on the side of the connecting plate. The stud is coaxially arranged with the core shaft. The core shaft includes a connecting end and a shaft body. One end of the connecting end is connected to the other end of the adapter seat, and the other end of the connecting end is connected to one end of the shaft body.

[0032] One end of the shaft extends through the connecting plate. When in use, the disc spring assembly deforms under pressure. At this point, the mandrel's elongation is less than the total deformation of the disc spring assembly, and the force applied by the disc spring assembly remains essentially stable. A pressure sensor displays the tension of the stretching mechanism in real time, allowing for timely adjustment of the tension as needed to ensure the mandrel remains stable. Therefore, the present invention is safe and easy to use.

[0033] 3. In an axial interference fit shaft according to the present invention, a spherical washer is positioned between the pressure sensor and the side plate. A fixed seat is mounted on the end of the carbon fiber sleeve near the connecting plate, with upper and lower gaskets positioned between the connecting end and the fixed seat. The fixed seat is embedded in the connecting plate. When the mandrel is extended to the tail end to the target value, the upper and lower gaskets are inserted between the mandrel and the carbon fiber sleeve. The hot water supply is stopped, and the tension of the stretching tool is gradually reduced until the mandrel and the carbon fiber sleeve are fully assembled. The upper and lower gaskets ensure timely and rapid opening and closing of the channel. Therefore, the present invention is stable to install and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a structural schematic diagram of the present invention.

[0035] Figure 2 It is a cross-sectional view of the present invention.

[0036] Figure 3 It is a structural schematic diagram of the stretching mechanism in the present invention.

[0037] Figure 4 It is a side view of the fixing seat in the present invention.

[0038] Figure 5 It is a side view of the core shaft in the present invention.

[0039] Figure 6 It is a structural schematic diagram of the disc spring group in the present invention.

[0040] Figure 7 It is an enlarged view of the disc spring assembly in the present invention.

[0041] Figure 8 It is an application schematic diagram of the present invention.

[0042] In the figure: core shaft 11, connecting end 111, shaft body 112, upper and lower gaskets 12, carbon fiber sleeve 13, upper and lower clamps 14 at the mouth, first threaded hole 15, internal hole 16, third threaded hole 17, right-angle joint 18, first joint 19, stretching mechanism 2, base 21, fixing seat 210, convex plate 211, circular inner plate 212, side plate 213, through-hole 214, stretching member 22, adapter seat 23, seat body 231, mounting plate 232, connecting plate 24, fixing bolt 241, disc spring assembly 25, sleeve 251, disc spring 252, nut 253, second threaded hole 254, pressure sensor 26, stud 27, conical washer 28, spherical washer 29. DETAILED DESCRIPTION

[0043] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0044] See also Figures 1 to 8 , an axial interference fit shaft, comprising a core shaft 11, a carbon fiber sleeve 13, upper and lower clamps 14 at the mouth, a right-angle joint 18 and a stretching mechanism 2;

[0045] One end of the mandrel 11 is arranged in the stretching mechanism 2, and the end of the mandrel 11 located in the stretching mechanism 2 is connected to the first joint 19. One end of the mandrel 11 passes through the stretching mechanism 2 and is arranged in the carbon fiber sleeve 13. One end of the carbon fiber sleeve 13 is fitted with the stretching mechanism 2, and the other end of the carbon fiber sleeve 13 is engaged with the upper and lower clamps 14 at the mouth.

[0046] A first threaded hole 15 is formed at one end of the mandrel 11 close to the stretching mechanism 2, an internal hole 16 is formed in the mandrel 11, the internal hole 16 is connected to the first threaded hole 15 and is located on the same transverse axis, and a third threaded hole 17 is formed at one end of the mandrel 11 away from the stretching mechanism 2, and a right-angle joint 18 is fitted into the internal thread of the third threaded hole 17;

[0047] The stretching mechanism 2 includes a base 21, a stretching member 22, an adapter seat 23, and a connecting plate 24. A stud 27 is provided transversely through the base 21. One end of the stud 27 passes through the side of the base 21 and is provided with the stretching member 22. The other end of the stud 27 is connected to one end of the adapter seat 23. The other end of the adapter seat 23 is connected to one end of the core shaft 11 through multiple sets of bolts. The upper and lower washers 12 are provided on the side of the connecting plate 24.

[0048] The stud 27 is coaxially arranged with the core shaft 11 .

[0049] The core shaft 11 includes a connecting end 111 and a shaft body 112, one end of the connecting end 111 is connected to the other end of the adapter 23, and the other end of the connecting end 111 is connected to one end of the shaft body 112;

[0050] One end of the shaft 112 is disposed through the connecting plate 24;

[0051] The distance between the end of the shaft 112 close to the connecting plate 24 and the end surfaces of the upper and lower clamps 14 at the mouth is less than the length of the carbon fiber sleeve 13 .

[0052] The base 21 includes a convex plate 211, a circular inner plate 212 and a side plate 213. The top of the convex plate 211 is embedded with the circular inner plate 212 with the opening facing right. The top of the convex plate 211 is located on the outer side of the circular inner plate 212 and is surrounded by the side plate 213.

[0053] A through hole 214 is formed on the right side of the side plate 213 , and the through hole 214 is connected to the inner cavity of the circular inner plate 212 .

[0054] A connecting plate 24 is provided between the top right side of the convex plate 211 and the right side of the side plate 213 , and the connecting plate 24 is provided corresponding to the through opening 214 ;

[0055] The connecting plate 24 is connected to the convex plate 211 and the side plate 213 by multiple sets of fixing bolts 241;

[0056] The circular inner plate 212 is hollow.

[0057] The adapter seat 23 includes a seat body 231 and a mounting plate 232. The left end of the seat body 231 is connected to the right end of the mounting plate 232. The other end of the stud 27 passes through the mounting plate 232 and is connected to the mounting plate 232 by a bolt. The right end of the seat body 231 is connected to one end of the connecting end 111.

[0058] There is a gap between the stud 27 and the seat 231 .

[0059] The stretching member 22 includes a disc spring assembly 25 and a pressure sensor 26 . The disc spring assembly 25 is sleeved on the outer side of the stud 27 , and the disc spring assembly 25 is connected to the pressure sensor 26 .

[0060] The disc spring assembly 25 includes a sleeve 251, eight disc springs 252, and a nut 253. A second threaded hole 254 is formed on the side of the sleeve 251, and a stud 27 is inserted through the second threaded hole 254.

[0061] The outer periphery of the stud 27 is located on the left side of the sleeve 251 and is threadedly engaged with a nut 253. Eight groups of disc springs 252 are provided on the outer periphery of the sleeve 251. The disc spring 252 on the far right is connected to the pressure sensor 26.

[0062] A conical washer 28 is embedded on the left side of the side plate 213, and the conical washer 28 is connected to the spherical washer 29 by bolts;

[0063] The spherical washer 29 is located between the pressure sensor 26 and the side plate 213 .

[0064] The carbon fiber sleeve 13 is provided with a fixing seat 210 at one end close to the connecting plate 24 , and upper and lower gaskets 12 are provided between the connecting end 111 and the fixing seat 210 ;

[0065] The fixing seat 210 is embedded in the connecting plate 24 .

[0066] The diameters of the shaft 112 , the connecting end 111 , and the fixing seat 210 are increasing.

[0067] The supplementary description of the present invention is as follows:

[0068] In order to ensure that the core shaft 11 can be interference fitted into the carbon fiber sleeve 13, the core shaft 11 needs to be heated to make it stretch. However, since the carbon fiber sleeve 13 has a good thermal insulation effect, if heated from the outside, it is difficult for the heat to be transferred to the core shaft 11, and the purpose of heating the core shaft 11 to stretch it cannot be achieved. Therefore, a through hole is processed inside the core shaft 11, and hot water is introduced from one end and discharged from the other end during thermal expansion, and the core shaft 11 is circulated and heated to stretch it. Example

[0069] An axial interference fit shaft, comprising a core shaft 11, a carbon fiber sleeve 13, upper and lower clamps 14 at the mouth, a right-angle joint 18 and a stretching mechanism 2; one end of the core shaft 11 is arranged in the stretching mechanism 2, one end of the core shaft 11 passes through the stretching mechanism 2 and is arranged in the carbon fiber sleeve 13, one end of the carbon fiber sleeve 13 is fitted with the stretching mechanism 2, and the other end of the carbon fiber sleeve 13 is engaged with the upper and lower clamps 14 at the mouth; a first threaded hole 15 is provided at one end of the core shaft 11 close to the stretching mechanism 2, an internal hole 16 is provided in the core shaft 11, and the internal hole 16 is aligned with the first threaded hole 15 is connected and located on the same transverse axis, a third threaded hole 17 is opened at the end of the core shaft 11 away from the stretching mechanism 2, and the inner thread of the third threaded hole 17 is matched with a right-angle joint 18; the stretching mechanism 2 includes a base 21, a stretching member 22, an adapter seat 23, and a connecting plate 24, a stud 27 is horizontally penetrated in the base 21, one end of the stud 27 passes through the side of the base 21 and is provided with a stretching member 22, the other end of the stud 27 is connected to one end of the adapter seat 23, and the other end of the adapter seat 23 is connected to one end of the core shaft 11 through multiple sets of bolts; the stud 27 is coaxially arranged with the core shaft 11.

[0070] During application: first, the core shaft 11 is installed into the carbon fiber sleeve 13 by cold sleeve, and the tail end face of the core shaft 11 is fitted with the end face of the carbon fiber sleeve 13; then the upper and lower clamps 14 are installed at the mouth, and the side beam is installed on the connecting plate 24 by screws 210, and the adapter 23 is installed, and then the first joint 19 and the right-angle joint 18 are installed, and they are connected to the pump station through a hose, and the nut on the tensile member 22 is tightened to apply axial tension to the core shaft 11; then hot water is injected into the first joint 19, and the hot water flows back to the pump station through the first threaded hole 15, the internal hole 16, the third threaded hole 17, and the right-angle joint 18 in turn. At this time, the core shaft 11 is elongated by heating, and the upper and lower gaskets 12 are installed from both sides during the heating process; when the upper and lower gaskets 12 are installed on the core shaft 11, the heating is stopped; when the temperature drops to half, the tensile member 22 is loosened; when the room temperature is restored, the side beam is removed from the tensile mechanism 2, the first joint 19 and the right-angle joint 18 are removed, and the assembly is completed. Example

[0071] Example 2 is basically the same as Example 1, except that:

[0072] The core shaft 11 includes a connecting end 111 and a shaft body 112, one end of the connecting end 111 is connected to the other end of the adapter 23, and the other end of the connecting end 111 is connected to one end of the shaft body 112; one end of the shaft body 112 is arranged through the connecting plate 24; the distance between the end of the shaft body 112 close to the connecting plate 24 and the end face of the upper and lower clamps 14 of the mouth is less than the length of the carbon fiber sleeve 13.

[0073] During application: the distance from the end faces of the core shaft 11 and the upper and lower gaskets 12 to the end faces of the upper and lower clamps 14 at the mouth is less than the length of the carbon fiber sleeve 13. In order to ensure that the core shaft 11 and the carbon fiber sleeve 13 are axially interference fit after assembly, tensile stress is generated in the core shaft 11 to resist the stress caused by temperature increase and ensure that the mouth of the core shaft 11 is not separated from the carbon fiber sleeve 13. Example

[0074] Example 3 is basically the same as Example 1, except that:

[0075] The tensile member 22 includes a disc spring group 25 and a pressure sensor 26. The disc spring group 25 is sleeved on the outer periphery of the stud 27 and is connected to the pressure sensor 26. The disc spring group 25 includes a sleeve 251, eight groups of disc springs 252 and a nut 253. A second threaded hole 254 is provided on the side of the sleeve 251, and the stud 27 is passed through the second threaded hole 254. The outer periphery of the stud 27 is located on the left side of the sleeve 251 and is threaded with a nut 253. Eight groups of disc springs 252 are provided on the outer periphery of the sleeve 251, and the disc spring on the far right is provided on the outer periphery of the sleeve 251. 252 is connected to the pressure sensor 26; a conical washer 28 is embedded in the left side of the side plate 213, and the conical washer 28 is connected to the spherical washer 29 by bolts; the spherical washer 29 is located between the pressure sensor 26 and the side plate 213; a fixing seat 210 is installed at one end of the carbon fiber sleeve 13 close to the connecting plate 24, and upper and lower gaskets 12 are provided between the connecting end 111 and the fixing seat 210; the fixing seat 210 is embedded in the connecting plate 24; the diameters of the shaft 112, the connecting end 111 and the fixing seat 210 are in an increasing trend.

[0076] During application: the diameter of the core shaft 11 increases after heating, and the transition fit with the inner hole of the carbon fiber sleeve 3 becomes an interference fit, which will hinder the extension of the length of the core shaft 11 and also hinder its retraction during cooling, resulting in a gap between the upper and lower clamps 4 at the front end and the small end face of the carbon fiber sleeve 3. The disc spring group 25 is deformed after being compressed. At this time, the elongation of the core shaft 11 is less than the total deformation of the disc spring group 25, and the force of the disc spring group 25 is basically stable; the pressure sensor 26 can display the tension of the stretching mechanism 2 at this time in real time, and adjust the tension in time as needed.

[0077] The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiment. Any equivalent modifications or changes made by ordinary technicians in this field based on the contents disclosed in the present invention should be included in the protection scope recorded in the claims.

Claims

1. An axial interference fit shaft, characterized in that: The axial interference fit shaft comprises a core shaft (11), a carbon fiber sleeve (13), upper and lower clamps (14) at the mouth, a right-angle joint (18) and a stretching mechanism (2); One end of the core shaft (11) is arranged in the stretching mechanism (2), and the end of the core shaft (11) located in the stretching mechanism (2) is connected to the first joint (19). One end of the core shaft (11) passes through the stretching mechanism (2) and is arranged in the carbon fiber sleeve (13). One end of the carbon fiber sleeve (13) is fitted with the stretching mechanism (2), and the other end of the carbon fiber sleeve (13) is engaged with the upper and lower clamps (14) at the mouth. A first threaded hole (15) is formed at one end of the core shaft (11) close to the stretching mechanism (2), an internal hole (16) is formed in the core shaft (11), the internal hole (16) is connected to the first threaded hole (15) and is located on the same transverse axis, and a third threaded hole (17) is formed at one end of the core shaft (11) away from the stretching mechanism (2), and the inner thread of the third threaded hole (17) is matched with a right-angle joint (18); The stretching mechanism (2) includes a base (21), a stretching member (22), an adapter seat (23), and a connecting plate (24). A stud (27) is provided transversely through the base (21). One end of the stud (27) passes through the side of the base (21) and is provided with a stretching member (22). The other end of the stud (27) is connected to one end of the adapter seat (23). The other end of the adapter seat (23) is connected to one end of the core shaft (11) through multiple sets of bolts. Upper and lower gaskets (12) are provided on the side of the connecting plate (24). The stud (27) is coaxially arranged with the core shaft (11); The stretching member (22) includes a disc spring assembly (25) and a pressure sensor (26), wherein the disc spring assembly (25) is sleeved on the outer side of the stud (27), and the disc spring assembly (25) is connected to the pressure sensor (26); The disc spring group (25) includes a sleeve (251), eight sets of disc springs (252) and a nut (253); a second threaded hole (254) is provided on the side of the sleeve (251); and a stud (27) is provided through the second threaded hole (254); The outer periphery of the stud (27) is located on the left side of the sleeve (251) and is threadedly engaged with a nut (253). Eight groups of disc springs (252) are provided on the outer periphery of the sleeve (251), and the disc spring (252) on the far right is connected to the pressure sensor (26).

2. The axial interference fit shaft according to claim 1, characterized in that: The core shaft (11) includes a connecting end (111) and a shaft body (112), one end of the connecting end (111) is connected to the other end of the adapter (23), and the other end of the connecting end (111) is connected to one end of the shaft body (112); One end of the shaft (112) is arranged to pass through the connecting plate (24); The distance between one end of the shaft body (112) close to the connecting plate (24) and the end faces of the upper and lower clamps (14) at the mouth is less than the length of the carbon fiber sleeve (13).

3. The axial interference fit shaft according to claim 2, characterized in that: The base (21) includes a convex plate (211), a circular inner plate (212) and a side plate (213); the top of the convex plate (211) is embedded with a circular inner plate (212) with an opening facing right; the top of the convex plate (211) is located on the outer side of the circular inner plate (212) and is surrounded by a side plate (213); A through opening (214) is provided on the right side of the side plate (213), and the through opening (214) is communicated with the inner cavity of the circular inner plate (212).

4. The axial interference fit shaft according to claim 3, characterized in that: A connecting plate (24) is provided between the right side of the top of the convex plate (211) and the right side of the side plate (213), and the connecting plate (24) is provided corresponding to the through opening (214); The connecting plate (24) is connected to the convex plate (211) and the side plate (213) via multiple sets of fixing bolts (241); The circular inner plate (212) is hollow.

5. The axial interference fit shaft according to claim 2, characterized in that: The adapter seat (23) includes a seat body (231) and a mounting plate (232), the left end of the seat body (231) is connected to the right end of the mounting plate (232), the other end of the stud (27) passes through the mounting plate (232) and is connected to the mounting plate (232) by a bolt, and the right end of the seat body (231) is connected to one end of the connecting end (111); There is a gap between the stud (27) and the seat (231).

6. The axial interference fit shaft according to claim 3, characterized in that: A conical washer (28) is embedded on the left side of the side plate (213), and the conical washer (28) and the spherical washer (29) are connected by bolts; The spherical washer (29) is located between the pressure sensor (26) and the side plate (213).

7. The axial interference fit shaft according to claim 6, characterized in that: A fixing seat (210) is installed at one end of the carbon fiber sleeve (13) close to the connecting plate (24), and upper and lower gaskets (12) are provided between the connecting end (111) and the fixing seat (210); The fixing seat (210) is embedded in the connecting plate (24).

8. The axial interference fit shaft according to claim 7, characterized in that: The diameters of the shaft body (112), the connecting end (111), and the fixing seat (210) are in an increasing trend.

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