Torque shaft testing device

Abstract

The utility model relates to the technical field of torque shaft testing, in particular to a torque shaft testing device, which comprises a torque shaft, a torsion wire, a left connector, a right connector, a left ejector pin and a right ejector pin, a left mounting hole and a right mounting hole are symmetrically arranged at two ends of the torque shaft, and the torque shaft is connected with the left connector and the right connector through the torsion wire; the left ejector pin is arranged on the central axis of the left driving device, the right ejector pin is arranged on the central axis of the right driving device, the central axes of the left ejector pin and the right ejector pin are arranged on the same horizontal line, and the left ejector pin and the right ejector pin are connected with the centers of the left end face and the right end face of the torque shaft respectively and used for limiting the axis movement range of the torque shaft. According to the torque shaft detection device, the defects in the prior art are overcome, the left ejector pin and the right ejector pin are arranged and tightly attached to the centers of the two end faces of the torque shaft respectively, so that the situation of axis displacement caused by uneven deflection of applied force in the detection process of the torque shaft is avoided, and the detection precision of the detection device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of torque shaft testing, and specifically relates to a torque shaft testing device. Background Art

[0002] In the existing torque testing device, due to the insufficient clamping force between the torque providing mechanism and the optical axis, the torque providing mechanism and the optical axis are prone to slipping during the testing process, which affects the testing results.

[0003] Chinese Patent: CN106840492B discloses a shaft torque testing device, which includes a torsion wire made of carbon fiber, a fixed table, a first driving device for providing torque and a second driving device for providing torque. The first driving device and the second driving device are respectively located on both sides of the fixed table; a first disc is provided at the output end of the first driving device. A first through hole is provided at the center of the first disc. The first disc is provided with a first fixing part for fixing the torsion wire and a second fixing part for fixing the torsion wire; the first fixing part and the second fixing part are symmetric about the diameter of the first disc. However, in this device, the rotational power of the torque shaft is transmitted by the driving device through the carbon fiber torsion wire. During the working process, the torque shaft rotates in suspension, resulting in the problem of large torque detection error due to the axis deviation of the torque shaft. At the same time, since the torque force provided by the carbon fiber is the vertical component of the tensile force, the kinetic energy consumption of the driving device is relatively large. Content of the Utility Model

[0004] Aiming at the deficiencies of the existing technology, the utility model provides a torque shaft testing device, which overcomes the deficiencies of the existing technology and aims to solve the problem that the axis deviation of the existing torque shaft measuring device affects the detection accuracy.

[0005] To achieve the above object, the utility model provides the following technical solution: A torque shaft testing device, including a torque shaft, a torsion wire, the left connector, the right connector, and further includes a left center punch and a right center punch. Left mounting holes and right mounting holes are symmetrically arranged at both ends of the torque shaft. The torque shaft is connected to the left connector and the right connector through the torsion wire; the left center punch is arranged on the central axis of the left driving device, the right center punch is arranged on the central axis of the right driving device, the central axes of the left center punch and the right center punch are arranged on the same horizontal line, and the left center punch and the right center punch are respectively connected to the centers of the left and right end faces of the torque shaft to limit the movement range of the axis of the torque shaft.

[0006] During use, open the protective cover, the left support and the right support, place the torque shaft on the left support and the right support, pass the torsion wire through the left mounting hole and the right mounting hole of the torque shaft, and then the torsion wire passes through the second through hole and the third through hole radially on the left connector and is connected to the left wire fixing block on the left connector. The torsion wire passes through the fifth through hole and the sixth through hole radially on the right connector and is connected to the right wire fixing block on the right connector. Ensure that the left mounting hole and the right mounting hole are coaxial with the second through hole and the fifth through hole respectively. Rotate the left connector and the right connector, the torsion wire is wound around the two end parts of the torque shaft, install the left driving device and the right driving device, tightly press the left thimble and the right thimble against the centers of the two end faces of the torque shaft respectively, adjust the horizontal concentricity, install the measuring unit, close the protective cover, and start the left driving device and the right driving device at the same time. The left driving device and the right driving device operate in opposite directions, and the measuring unit detects the torque.

[0007] As a preferred technical solution of the present invention, the left thimble and the right thimble are cones with convex platforms at the bottom. The left thimble is connected to the left driving device by threading, welding or inlaying, and the right thimble is connected to the right driving device by threading, welding or inlaying respectively.

[0008] As a preferred technical solution of the present invention, the left connector and the right connector are cuboids. A first through hole is axially arranged in the middle of the left connector, and a second through hole and a third through hole are radially arranged. The center lines of the second through hole and the third through hole coincide and pass through the center of the first through hole; a fourth through hole is axially arranged in the middle of the right connector, and a fifth through hole and a sixth through hole are radially arranged. The center lines of the fifth through hole and the sixth through hole coincide and pass through the center of the fourth through hole.

[0009] As a preferred technical solution of the present invention, the left connector includes a left wire fixing block, the right connector includes a right wire fixing block, the left wire fixing block and the right wire fixing block are studs, a first hook is arranged at one end of the left wire fixing block, a second hook is arranged on the right wire fixing block, and the first hook and the second hook are connected to the torsion wire.

[0010] As a preferred technical solution of the present invention, the left wire fixing block is threadedly connected to the second through hole, and the right wire fixing block is threadedly connected to the fifth through hole.

[0011] As a preferred technical solution of the present utility model, it further includes a left support, a right support, a base, a measuring unit, and a protective cover. The left support and the right support are respectively fixed on the base and are used to initially support the torque shaft. One end of the protective cover is movably connected to the base and is used to protect personnel safety. The measuring unit is arranged outside the protective cover.

[0012] As a preferred technical solution of the present utility model, the left connector is connected to the left driving device by bolts or screws, and the right driving device is connected to the right connector by bolts or screws.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. By providing a left thimble and a right thimble, the left thimble and the right thimble are respectively in close contact with the centers of the two end faces of the torque shaft, so that the torque shaft can avoid the situation of axial displacement caused by uneven deflection due to the applied force during the detection process, which is beneficial to improving the detection accuracy of the detection device.

[0015] 2. Through the optimized design of the alignment block and the connector, the force structure of the torque shaft is improved, the conversion efficiency of the torque of the driving device is increased, which is beneficial to reducing the overall energy consumption of the detection device, and reducing the processing cost and the later use and maintenance cost of the detection device. Description of the Drawings

[0016] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0017] Figure 2 is a front view of the present utility model;

[0018] Figure 3 is a sectional view taken along the A-A line of the front view of the present utility model;

[0019] Figure 4 is a schematic diagram of the connector structure of the present utility model;

[0020] Figure 5 is a schematic diagram of the left alignment block structure of the present utility model;

[0021] Figure 6 is a schematic diagram of the right alignment block structure of the present utility model;

[0022] In the figure: 1. Torque shaft; 101. Left mounting hole; 102. Right mounting hole; 2. Left support; 3. Right support; 4. Base; 5. Measuring unit; 6. Left thimble; 7. Right thimble; 8. Twisted wire; 9. Left connector; 901. First through hole; 902. Second through hole; 903. Third through hole; 904. Fourth through hole; 905. Fifth through hole; 906. Sixth through hole; 10. Right connector; 11. Left wire fixing block; 1101. First hook; 12. Right wire fixing block; 1201. Second hook; 13. Left driving device; 14. Right driving device; 15. Protective cover. Detailed implementation manners

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] Please refer to Figures 1-6 , the present invention provides the following technical solutions: A torque shaft testing device includes a torque shaft 1, a twisted wire 8, a left thimble 6, a right thimble 7, a left connector 9, and a right connector 10. Left mounting holes 101 and right mounting holes 102 are symmetrically arranged at both ends of the torque shaft 1. The torque shaft 1 is connected to the left connector 9 and the right connector 10 through the twisted wire 8. The left thimble 6 is arranged on the central axis of the left driving device 13, and the right thimble 7 is arranged on the central axis of the right driving device 14. The central axes of the left thimble 6 and the right thimble 7 are arranged on the same horizontal line. The left thimble 6 and the right thimble 7 are respectively connected to the centers of the left and right end faces of the torque shaft 1 to limit the axial movement range of the torque shaft 1.

[0025] In use, open the protective cover 15, the left support 2 and the right support 3, place the torque shaft 1 on the left support 2 and the right support 3, pass the torsion wire 8 through the left mounting hole 101 and the right mounting hole 102 of the torque shaft 1, and then the torsion wire 8 passes through the radial second through hole 902 and the third through hole 903 on the left connector 9 and is connected to the left wire fixing block 11 on the 9. The torsion wire 8 passes through the radial fifth through hole 905 and the sixth through hole 906 on the right connector 10 and is connected to the right wire fixing block 12 on the right connector 10. Ensure that the left mounting hole 101 and the right mounting hole 102 are coaxial with the second through hole 902 and the fifth through hole 905 respectively. Rotate the left connector 9 and the right connector 10, and the torsion wire 8 is wound around the two end portions of the torque shaft 1. Install the left driving device 13 and the right driving device 14, press the left thimble 6 and the right thimble 7 tightly against the centers of the two end faces of the torque shaft 1 respectively, adjust the horizontal concentricity, install the measuring unit 5, close the protective cover 15, and start the left driving device 13 and the right driving device 14 at the same time. The left driving device 13 and the right driving device 14 operate in opposite directions, and the measuring unit 5 detects the torque.

[0026] In this way, the left thimble 6 and the right thimble 7 are kept connected to the centers of the two end faces of the torque shaft 1, which plays a role in restricting the shaking of the torque shaft 1, preventing the torque shaft 1 from vibrating too much under the action of the torsion wire 8, and further reducing the vibration of the two end faces of the torque shaft 1 during the working process, which affects the detection result of the torque. At the same time, the left thimble 6 and the right thimble 7 are fixed on the same horizontal line, which is convenient for the quick installation and horizontal alignment of the torque shaft 1.

[0027] Specifically, the left thimble 6 and the right thimble 7 are cones with convex platforms at the bottom. The left thimble 6 is connected to the left driving device 13 by threading, welding or inlaying. The right thimble 7 is respectively connected to the right driving device 14 by threading, welding or inlaying. By setting the left thimble 6 and the right thimble 7 in this way, their contact areas with the two end faces of the torque shaft 1 are small and located at the center of the end face, which has the least influence on the outer diameter surface of the torque shaft 1, helps to improve the torque detection accuracy of the detection device, and achieves a good detection application effect. Using a variety of connection methods to fix the left thimble 6 and the right thimble 7 can facilitate the processing of the detection device according to the actual working conditions, help to improve the processing convenience of the device, and reduce the processing cost. At the same time, these connection methods have strong reliability and simple structures, which help to improve the reliability and stability of the overall structure of the detection device.

[0028] Specifically, the left connector 9 and the right connector 10 are cuboids. A first through hole 901 is axially provided in the middle of the left connector 9, and second through holes 902 and third through holes 903 are radially provided. The center lines of the second through holes 902 and the third through holes 903 coincide and pass through the center of the first through hole 901; a fourth through hole 904 is axially provided in the middle of the right connector 10, and fifth through holes 905 and sixth through holes 906 are radially provided. The center lines of the fifth through holes 905 and the sixth through holes 906 coincide and pass through the center of the fourth through hole 904. By setting the first through hole 901 and the fourth through hole 904 in this way, the end of the torque shaft 1 can be fixed in the middle of the left connector 9 and the right connector 10, realizing the vertical fixation of the torsion wire 8, so that the torque of the left driving device 13 and the right driving device 14 is directly applied to both ends of the torque shaft 1, avoiding the dispersion of force, saving energy consumption and the procurement of high-power driving devices, and being beneficial to reducing the production cost and the later use and maintenance cost.

[0029] Specifically, the left connector 9 includes a left wire fixing block 11, and the right connector 10 includes a right wire fixing block 12. The left wire fixing block 11 and the right wire fixing block 12 are studs. A first hook 1101 is provided at one end of the left wire fixing block 11, and a second hook 1201 is provided on the right wire fixing block 12. The first hook 1101 and the second hook 1201 are connected to the torsion wire 8. By setting the left wire fixing block 11 and the right wire fixing block 12 in this way, the torsion wire 8 can connect the torque shaft 1 in a vertical state, efficiently applying the torque of the left driving device 13 and the right driving device 14 to the torque shaft 1, reducing the energy consumption of the left driving device 13 and the right driving device 14, improving the working efficiency of the detection device, being beneficial to reducing the processing cost and the use cost of the detection device, and expanding the scope of use.

[0030] Specifically, the left wire fixing block 11 is threadedly connected to the second through hole 902, and the right wire fixing block 12 is threadedly connected to the fifth through hole 905. By setting the left wire fixing block 11 and the right wire fixing block 12 in this way, they can be fixed on the left connector 9 and the right connector 10 through a simple structure, improving the reliability of the connection of the detection device, facilitating the use, installation, disassembly and maintenance of the detection device, improving the working efficiency in the processing process and the use process, reducing the processing and maintenance time, and achieving better economic benefits.

[0031] Specifically, it further includes a left support 2, a right support 3, a base 4, a measuring unit 5, and a protective cover 15. The left support 2 and the right support 3 are respectively fixed on the base 4 and are used to adjust the initial support torque shaft 1. One end of the protective cover 15 is movably connected to the base 4 and is used to protect the safety of personnel. The measuring unit 5 is arranged outside the protective cover 15. The left support 2 and the right support 3 are arranged in this way to support and fix the torque shaft 1 in the initial adjustment stage, which is convenient for the installation and connection of the torque shaft 1, the torsion wire 8, the left connector 9, and the right connector 10, helps to improve the installation efficiency of the detection device and saves the detection time. The installation of the protective cover 15 and the measuring unit 5 can effectively prevent the damage to the personnel and the measuring unit 5 caused by unexpected situations during the experiment process, and improve the safety and reliability of the detection device.

[0032] Specifically, the central axes of the left support 2 and the right support 3 are lower than the axis of the torque shaft 1 when detecting the torque. Such a setting makes the outer diameter surface of the torque shaft 1 not contact with the left support 2 and the right support 3 when detecting the torque, avoids the influence of the left support 2 and the right support 3 on the torque direction of the torque shaft 1, and is beneficial to improving the detection accuracy of the detection device.

[0033] Specifically, the measuring unit 5 includes a detection device 501, and the detection device 501 is connected to the torque shaft 1. Such a setting uses an indirect measurement method to detect the torque, avoids the machining of the torque shaft 1, saves the detection time, improves the machining efficiency, and helps to reduce the detection cost.

[0034] Specifically, the left connector 9 is bolted or screwed to the left driving device 13, and the right driving device 14 is bolted or screwed to the right connector 10. Such a setting enables the left connector 9 and the right connector 10 to detachably connect the left driving device 13 and the right driving device 14, so that they can be replaced according to the size of the torque shaft 1, meet the detection requirements of workpieces with different detection sizes, expand the use range of the detection device, and achieve better use effects.

[0035] Working principle: When in use, open the protective cover 15, the left support 2 and the right support 3, place the torque shaft 1 on the left support 2 and the right support 3, pass the twisting wire 8 through the left mounting hole 101 and the right mounting hole 102 of the torque shaft 1, and then the twisting wire 8 passes through the radial second through-hole 902 and the third through-hole 903 on the left connector 9 and is connected to the left wire fixing block 11 on the left connector 9. The twisting wire 8 passes through the radial fifth through-hole 905 and the sixth through-hole 906 on the right connector 10 and is connected to the right wire fixing block 12 on the right connector 10. Ensure that the left mounting hole 101 and the right mounting hole 102 are coaxial with the second through-hole 902 and the fifth through-hole 905 respectively. Rotate the left connector 9 and the right connector 10, and the twisting wire 8 is wound around the two end parts of the torque shaft 1. Install the left driving device 13 and the right driving device 14, closely abut the left thimble 6 and the right thimble 7 against the centers of the two end faces of the torque shaft 1 respectively, adjust the horizontal concentricity, install the measuring unit 5, close the protective cover 15, and simultaneously start the left driving device 13 and the right driving device 14. The left driving device 13 and the right driving device 14 operate in opposite directions, and the measuring unit 5 detects the torque.

[0036] Finally, it should be noted that in the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0037] In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "install", "connected", "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A torque shaft testing device, comprising a torque shaft (1), a torsion wire (8), a left connector (9), and a right connector (10), characterized in that: The invention also comprises a left ejector pin (6) and a right ejector pin (7). The two ends of the torque shaft (1) are symmetrically provided with a left mounting hole (101) and a right mounting hole (102). The torque shaft (1) is connected to the left connector (9) and the right connector (10) through the torsion wire (8). The left ejector pin (6) is arranged on the central axis of the left driving device (13), and the right ejector pin (7) is arranged on the central axis of the right driving device (14). The central axes of the left ejector pin (6) and the right ejector pin (7) are arranged on the same horizontal line. The left ejector pin (6) and the right ejector pin (7) are respectively connected to the centers of the left and right end surfaces of the torque shaft (1) to limit the axial motion range of the torque shaft (1).

2. A torque shaft testing device according to claim 1, characterized in that: The left ejector pin (6) and the right ejector pin (7) are cones with bosses at the bottom. The left ejector pin (6) is connected to the left drive device (13) by thread, welding or embedding, and the right ejector pin (7) is connected to the right drive device (14) by thread, welding or embedding.

3. A torque shaft testing device according to claim 2, characterized in that: The left connector (9) and the right connector (10) are rectangular parallelepipeds. A first through hole (901) is axially arranged in the middle of the left connector (9), and a second through hole (902) and a third through hole (903) are radially arranged. The center lines of the second through hole (902) and the third through hole (903) coincide with each other and pass through the center of the first through hole (901). A fourth through hole (904) is axially arranged in the middle of the right connector (10), and a fifth through hole (905) and a sixth through hole (906) are radially arranged. The center lines of the fifth through hole (905) and the sixth through hole (906) coincide with each other and pass through the center of the fourth through hole (904).

4. A torque shaft testing device according to claim 3, characterized in that: The left connector (9) comprises a left wiring block (11), and the right connector (10) comprises a right wiring block (12); the left wiring block (11) and the right wiring block (12) are studs; a first hook (1101) is arranged at one end of the left wiring block (11), and a second hook (1201) is arranged at the right wiring block (12); the first hook (1101) and the second hook (1201) are connected to the twisted wire (8).

5. A torque shaft testing device according to claim 4, characterized in that: The left alignment block (11) is threadedly connected to the second through hole (902), and the right alignment block (12) is threadedly connected to the fifth through hole (905).

6. A torque shaft testing device according to claim 1, characterized in that: The invention also comprises a left support (2), a right support (3), a base (4), a measuring unit (5) and a protective cover (15); the left support (2) and the right support (3) are respectively fixed on the base (4) and are used for adjusting the initial support of the torque shaft (1); one end of the protective cover (15) is movably connected to the base (4) and is used for protecting personnel safety; and the measuring unit (5) is arranged outside the protective cover (15).

7. The torque shaft testing device according to claim 1, characterized in that: The left connector (9) is connected to the left drive device (13) by bolts or screws, and the right drive device (14) is connected to the right connector (10) by bolts or screws.

Images