A high torque coupling shaft for a twist-on wire connector

Abstract

The utility model relates to the field of screwing machine, disclose a kind of screwing machine big torque connecting shaft, including connecting shaft main body, the both sides of connecting shaft main body are detachably installed with universal joint fork, the side of universal joint fork is swingly articulated with cross shaft, the side of cross shaft is swingly articulated with driven shaft, the outside of connecting shaft main body is provided with reinforcing spline, the outside of reinforcing spline is installed with spline sleeve, the universal joint fork is threadedly connected with mounting bolt and reinforcing bolt, the surface of connecting shaft main body is provided with mounting hole. The big torque connecting shaft of the screwing machine allows the existence of certain angular deflection of connecting shaft main body when using by the connecting mode of universal joint, further realizes torque compensation and angle compensation by using titanium alloy material with universal joint fork in cooperation with connecting shaft main body, and the durability of connecting shaft main body is enhanced, the structure realizes the function of enhancing torque compensation, solves the problem that the torque acting on connecting shaft is too large.

Description

Technical Field

[0001] This utility model relates to the field of screwing machine technology, specifically a high-torque connecting shaft for screwing machines. Background Technology

[0002] A screwing machine is a device used in the production of oil tubing or casing to screw couplings onto the pipe body according to standards. It mainly consists of a main machine responsible for screwing, an operating table responsible for control, display and record data, and a hydraulic station. The high-torque connecting shaft is one of the most important components of the screwing machine. The high-torque connecting shaft is a mechanical component used to transmit large rotational torque.

[0003] The high-torque connecting shaft of a screwing machine can be divided into hollow structure and solid structure. The solid structure connecting shaft is stronger, but the allowable deflection angle of the torque is smaller during use. The torque is directly applied to the connecting shaft, which reduces the service life and durability of the connecting shaft.

[0004] There is an urgent need for a high-torque connecting shaft for screwing machines to address the technical deficiencies mentioned above. Utility Model Content

[0005] The purpose of this invention is to provide a high-torque connecting shaft for a screwing machine, so as to solve the problem of excessive torque acting on the connecting shaft mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-torque connecting shaft for a screwing machine, comprising a connecting shaft body, universal joint forks detachably mounted on both sides of the connecting shaft body, a cross shaft movably hinged to the side of the universal joint fork, a driven shaft movably hinged to the side of the cross shaft, a reinforcing spline provided on the outside of the connecting shaft body, a spline sleeve installed on the outside of the reinforcing spline, mounting bolts and reinforcing bolts threadedly connected to the universal joint fork, mounting holes opened on the surface of the connecting shaft body, a carbon fiber layer provided on the outside of the connecting shaft body, a graphene composite coating provided on the outside of the carbon fiber layer, and a high-entropy alloy coating provided on the outside of the graphene composite coating.

[0007] As a further technical solution of this utility model, the cross shaft is provided in two sets, and both the connecting shaft body and the cross shaft adopt a titanium alloy inner core structure.

[0008] As a further technical solution of this utility model, the two sides of the connecting shaft body are embedded inside the universal joint fork, and the mounting bolts and reinforcing bolts are embedded inside the mounting holes in a threaded connection.

[0009] As a further technical solution of this utility model, the high-entropy alloy coating is uniformly sprayed on the outside of the connecting shaft body, and the high-entropy alloy coating covers the outer layer of the graphene composite coating.

[0010] As a further technical solution of this utility model, the spline sleeve is provided in two sets, and reinforcing ribs are fixedly connected to both sides of the spline sleeve.

[0011] As a further technical solution of this utility model, the spline sleeve has a groove inside, and the reinforced spline is embedded inside the groove.

[0012] Compared with the prior art, the beneficial effects of this utility model are: the high torque connecting shaft of the screwing machine not only realizes the function of enhancing torque compensation and reducing contact stress, but also realizes the function of improving support strength and wear resistance.

[0013] (1) By setting a driven shaft, a cross shaft, a universal joint fork, a connecting shaft body and mounting bolts, universal joint forks are installed on both sides of the connecting shaft body. The universal joint forks are connected to the driven shaft through the cross shaft. The driven shaft, the cross shaft and the universal joint fork form a stable hinge structure. The connection method of the universal joint allows the connecting shaft body to have a certain angle deflection during use. The connecting shaft body is made of titanium alloy material and is used in conjunction with the universal joint fork to further realize torque compensation and angle compensation, and enhance the durability of the connecting shaft body. This structure realizes the function of enhanced torque compensation.

[0014] (2) By setting up a reinforced spline, a connecting shaft body, a spline sleeve and a reinforcing rib, the reinforced spline on the outside of the connecting shaft body enhances the overall pressure resistance. A detachable spline sleeve is installed on the outside of the reinforced spline. The spline sleeve can compensate for the axial displacement of the connecting shaft body. Moreover, the reinforcing rib on the spline sleeve enhances the overall durability. The reinforced spline and spline sleeve can increase the torque without reducing the contact stress of the connecting shaft body. This structure realizes the function of facilitating the reduction of contact stress.

[0015] (3) By setting a connecting shaft body, a high-entropy alloy coating, a graphene composite coating and a carbon fiber layer, the high-entropy alloy coating on the outside of the connecting shaft body can greatly improve the wear resistance of the connecting shaft body, the graphene composite coating can enhance the thermal conductivity of the connecting shaft body, and the carbon fiber layer combined with the titanium alloy connecting shaft body can enhance the overall tensile strength and support strength. This structure realizes the function of facilitating the enhancement of support and wear resistance. Attached Figure Description

[0016] Figure 1 This is a frontal cross-sectional view of the present invention.

[0017] Figure 2 This is a front view schematic diagram of the driven shaft structure of this utility model;

[0018] Figure 3 For the present utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0019] Figure 4 This is a side view of the spline sleeve structure of this utility model.

[0020] In the diagram: 1. Driven shaft; 2. Cross shaft; 3. Universal joint fork; 4. Reinforced spline; 5. Connecting shaft body; 6. High-entropy alloy coating; 7. Spline sleeve; 8. Mounting bolt; 9. Graphene composite coating; 10. Mounting hole; 11. Reinforced bolt; 12. Carbon fiber layer; 13. Reinforcing rib plate. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4 An embodiment of this utility model provides a high-torque connecting shaft for a screwing machine, comprising a connecting shaft body 5, universal joint forks 3 detachably mounted on both sides of the connecting shaft body 5, a cross shaft 2 movably hinged to the side of the universal joint fork 3, a driven shaft 1 movably hinged to the side of the cross shaft 2, a reinforcing spline 4 provided on the outside of the connecting shaft body 5, a spline sleeve 7 installed on the outside of the reinforcing spline 4, mounting bolts 8 and reinforcing bolts 11 threadedly connected to the universal joint fork 3, mounting holes 10 opened on the surface of the connecting shaft body 5, a carbon fiber layer 12 provided on the outside of the connecting shaft body 5, a graphene composite coating 9 provided on the outside of the carbon fiber layer 12, and a high-entropy alloy coating 6 provided on the outside of the graphene composite coating 9.

[0023] The cross shaft 2 is provided in two sets. Both the connecting shaft body 5 and the cross shaft 2 adopt a titanium alloy inner core structure. The two sides of the connecting shaft body 5 are embedded in the interior of the universal joint fork 3. The mounting bolt 8 and the reinforcing bolt 11 are embedded in the interior of the mounting hole 10 and are connected by threads.

[0024] Specifically, such as Figure 1 and Figure 2 As shown, universal joint forks 3 are installed on both sides of the connecting shaft body 5. The universal joint forks 3 are connected to the driven shaft 1 through the cross shaft 2. The driven shaft 1, the cross shaft 2 and the universal joint forks 3 form a stable hinge structure. The universal joint connection method allows the connecting shaft body 5 to have a certain angle deflection during use. The connecting shaft body 5 is made of titanium alloy material and is used in conjunction with the universal joint forks 3 to further realize torque compensation and angle compensation, thereby enhancing the durability of the connecting shaft body 5.

[0025] The high-entropy alloy coating 6 is uniformly sprayed on the outside of the connecting shaft body 5, and the high-entropy alloy coating 6 covers the outer layer of the graphene composite coating 9.

[0026] Specifically, such as Figure 1 and Figure 3 As shown, the high-entropy alloy coating 6 on the outside of the connecting shaft body 5 can significantly improve the wear resistance of the connecting shaft body 5, the graphene composite coating 9 can enhance the thermal conductivity of the connecting shaft body 5, and the carbon fiber layer 12, in combination with the carbon alloy connecting shaft body 5, can enhance the overall tensile strength and support strength.

[0027] The spline sleeve 7 is provided in two sets. Both sides of the spline sleeve 7 are fixedly connected with reinforcing ribs 13. The inside of the spline sleeve 7 is provided with grooves, and the spline 4 is embedded in the grooves to reinforce it.

[0028] Specifically, such as Figure 1 and Figure 4 As shown, the reinforced spline 4 on the outside of the connecting shaft body 5 enhances the overall pressure resistance. A detachable spline sleeve 7 is installed on the outside of the reinforced spline 4. The spline sleeve 7 can compensate for the axial displacement of the connecting shaft body 5. Moreover, the reinforcing ribs 13 on the spline sleeve 7 enhance the overall durability. The reinforced spline 4 and spline sleeve 7 can increase the torque without reducing the contact stress of the connecting shaft body 5.

[0029] Working principle: Universal joint forks 3 are installed on both sides of the connecting shaft body 5. The universal joint forks 3 are connected to the driven shaft 1 through the cross shaft 2. The driven shaft 1, cross shaft 2, and universal joint forks 3 form a stable hinge structure. The universal joint connection method allows the connecting shaft body 5 to have a certain angle of deflection during use. The connecting shaft body 5 is made of titanium alloy material and works in conjunction with the universal joint forks 3 to further realize torque compensation and angle compensation, enhancing the durability of the connecting shaft body 5. The reinforced spline 4 on the outside of the connecting shaft body 5 enhances the overall pressure resistance. A removable spline sleeve 7 is mounted on the outside of the spline 4. The spline sleeve 7 can compensate for the axial displacement of the connecting shaft body 5. Moreover, the reinforcing ribs 13 on the spline sleeve 7 enhance the overall durability and strength. The high-entropy alloy coating 6 on the outside of the connecting shaft body 5 can significantly improve the wear resistance of the connecting shaft body 5. The graphene composite coating 9 can enhance the thermal conductivity of the connecting shaft body 5. The carbon fiber layer 12, in combination with the titanium alloy connecting shaft body 5, can enhance the overall tensile strength and support strength. This structure realizes the functions of easily enhancing support and wear resistance.

[0030] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A twist-on fitting high torque union shaft comprising a union shaft body (5) characterized by: Universal joint forks (3) are detachably installed on both sides of the connecting shaft body (5). A cross shaft (2) is movably hinged to the side of the universal joint fork (3). A driven shaft (1) is movably hinged to the side of the cross shaft (2). A reinforcing spline (4) is provided on the outside of the connecting shaft body (5). A spline sleeve (7) is installed on the outside of the reinforcing spline (4). A mounting bolt (8) and a reinforcing bolt (11) are threaded on the universal joint fork (3). A mounting hole (10) is opened on the surface of the connecting shaft body (5). A carbon fiber layer (12) is provided on the outside of the connecting shaft body (5). A graphene composite coating (9) is provided on the outside of the carbon fiber layer (12). A high entropy alloy coating (6) is provided on the outside of the graphene composite coating (9).

2. A high torque union shaft for a twist-on connector as defined in claim 1, wherein: The cross shaft (2) is provided in two sets, and both the connecting shaft body (5) and the cross shaft (2) adopt a titanium alloy inner core structure.

3. A high torque union shaft for a twist-on connector as defined in claim 1, wherein: The two sides of the connecting shaft body (5) are embedded inside the universal joint fork (3), and the mounting bolt (8) and reinforcing bolt (11) are embedded inside the mounting hole (10) in a threaded connection.

4. A high-torque connecting shaft for a screwing machine according to claim 1, characterized in that: The high-entropy alloy coating (6) is uniformly sprayed on the outside of the connecting shaft body (5), and the high-entropy alloy coating (6) covers the outer layer of the graphene composite coating (9).

5. A high torque union shaft for a twist-on connector as defined in claim 1, wherein: The spline sleeve (7) is provided in two sets, and reinforcing ribs (13) are fixedly connected to both sides of the spline sleeve (7).

6. A high torque union shaft for a twist-on connector as defined in claim 1, wherein: The spline sleeve (7) has a groove inside, and the reinforcing spline (4) is embedded inside the groove.

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