Friction torque detection device

Abstract

The invention discloses a friction torque detection device, and relates to the technical field of wind turbine generator detection equipment, and the device comprises a positioning seat which is used for being fixed on a main shaft pedestal; the traction mechanism is rotatably arranged on the positioning seat; one end of the dynamometer is connected with the driving end of the traction mechanism through a first traction rope, and the other end of the dynamometer is connected with a second traction rope; the guide wheel is used for being clamped and fixed to the periphery of the main bearing, and a second traction rope is wound on the guide wheel; wherein the traction mechanism is used for driving the main bearing to rotate, and the dynamometer is used for detecting force generated by rotation of the main bearing and transmitting a signal to the display device. The friction torque detection device can improve the measurement precision and convenience of the friction torque of the main bearing.

Description

Technical Field

[0001] The present invention relates to the technical field of wind turbine detection equipment, and more specifically, to a friction torque detection device. Background Art

[0002] The main shaft drive is an essential part of the wind turbine drive chain. The magnitude of the main shaft driving torque affects the transmission efficiency of the entire wind turbine. Generally, the driving torque of the main shaft is known by measuring the friction torque of the main bearing. Therefore, during the assembly process of the unit, measuring the friction torque of the main bearing is an indispensable step.

[0003] In recent years, with the rise of the wind power industry, wind turbines have tended to be large-sized, and the main bearings have become larger and larger. The existing measurement methods have low measurement accuracy and complex operations.

[0004] Therefore, how to provide a friction torque detection device that can improve the measurement accuracy and convenience of the friction torque of the main bearing is an urgent problem to be solved by those skilled in the art at present. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a friction torque detection device that can improve the measurement accuracy and convenience of the friction torque of the main bearing.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A friction torque detection device includes:

[0008] A positioning seat for being fixed on the main shaft base;

[0009] A traction mechanism rotatably arranged on the positioning seat;

[0010] A dynamometer, one end of which is connected to the driving end of the traction mechanism through a first traction rope, and the other end of the dynamometer is connected to a second traction rope;

[0011] A guide wheel for being clamped on the outer periphery of the main bearing, and the second traction rope is wound around the guide wheel;

[0012] Wherein, the traction mechanism is used to drive the main bearing to rotate, and the dynamometer is used to detect the force generated by the rotation of the main bearing and transmit the signal to the display device.

[0013] Preferably, the guide wheel is of an arc structure for sleeving on the main bearing and being coaxially fitted, and the rotation axis of the traction mechanism is perpendicular to the positioning seat, and the driving end of the traction mechanism and the guide wheel are located on the same horizontal plane.

[0014] Preferably, the positioning seat includes a base beam, a connecting member and a supporting seat. The connecting member is arranged at one end of the base beam for connecting the main shaft base. The supporting seat is vertically arranged at the other end of the base beam. The traction mechanism can be rotatably arranged on the supporting seat with the center line of the supporting seat as the rotation axis.

[0015] Preferably, a limit plate is provided on a side of the bottom beam facing the traction mechanism, and the limit plate is located between the connecting member and the supporting seat and is used to abut against the edge of the main shaft base.

[0016] Preferably, the bottom beam includes a bottom beam body, a vertical plate and a rib plate, the bottom beam body is a rectangular shell structure, the vertical plate is integrally arranged in the middle position inside the rectangular shell structure, and the rib plates are integrally and vertically arranged on both sides of the vertical plate.

[0017] Preferably, the traction mechanism includes a support, a connecting assembly, a driving assembly, a traction wheel and a transmission assembly, the support is rotatably connected to the support seat through the connecting assembly, the driving end of the driving assembly is arranged at one end of the support, the traction wheel is arranged at the other end of the support and is wound around the first traction rope, and the driving end of the driving assembly and the traction wheel are transmission-connected through the transmission assembly.

[0018] Preferably, the connecting assembly includes a mounting plate, a rotating shaft seat and an adjustment seat, one side of the mounting plate is connected to the support, and the rotating shaft seat is arranged on the other side, the rotating shaft seat is connected to the adjustment seat via a bearing sleeve, and the adjustment seat is connected to the support seat, wherein the axis of the bearing and the center line of the support seat are collinear.

[0019] Preferably, a plurality of bolts are evenly arranged around the center line of the adjustment seat, the bolts pass through the adjustment seat and are inserted into the bolt holes of the support seat, and three nuts are provided on the bolts, the first nut is fastened to one side of the flange of the adjustment seat, the second nut is fastened to the other side of the flange of the adjustment seat, and the third nut is fastened to the support seat.

[0020] Preferably, the guide wheel comprises a plurality of arc segments connected end to end in sequence, one end of the arc segment is provided with a groove extending around the center of the arc segment for winding the second traction rope, the other end of the arc segment is provided with a base plate, the base plate is provided with a plurality of sockets evenly arranged around the center of the arc segment, a support shaft is inserted into the socket for connecting the main bearing.

[0021] Preferably, a clamping hole is provided in the groove of the arc segment, and the second traction rope is fixed in the clamping hole.

[0022] When the friction torque detection device provided by the present invention is in use, the guide wheel is clamped on the outer periphery of the main bearing. The guide wheel is driven to rotate by the traction mechanism, and then the main bearing is driven to rotate. At the same time, the dynamometer detects the force generated during the rotation of the main bearing in real time and transmits the signal to the display device, so that the real-time data of the friction torque of the main bearing can be conveniently read, improving the measurement convenience. Moreover, the friction torque can be measured by rotating the main bearing multiple times, making the measured value closer to the true value and improving the measurement accuracy. Description of the Drawings

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0024] Figure 1 Structural schematic diagram of the friction torque detection device provided by the present invention;

[0025] Figure 2 Structural schematic diagram of the connecting piece provided by the present invention;

[0026] Figure 3 Structural schematic diagram of the positioning seat provided by the present invention;

[0027] Figure 4 Exploded structural schematic diagram of the traction mechanism provided by the present invention;

[0028] Figure 5 Structural schematic diagram of the dynamometer provided by the present invention;

[0029] Figure 6 Structural schematic diagram of the guide wheel provided by the present invention;

[0030] Figure 7 Partial schematic diagram of the guide wheel provided by the present invention;

[0031] Figure 8 Installation schematic diagram of the friction torque detection device provided by the present invention when in use;

[0032] Figure 9 For Figure 8 Cross-sectional view taken along line I-I in

[0033] Figure 10 For Figure 8 Partial enlarged view at A in

[0034] Figure 11 For Figure 8 Partial enlarged view at B in

[0035] Reference numerals:

[0036] 1 - positioning seat; 11 - bottom beam; 111 - bottom beam body; 112 - vertical plate; 113 - rib plate; 114 - steel pipe; 12 - connecting piece; 121 - connecting piece body; 122 - end cap; 123 - baffle; 124 - inserting shaft; 13 - supporting seat; 131 - square pipe; 132 - front flange; 133 - rear flange; 14 - limiting plate;

[0037] 2 - traction mechanism; 21 - support; 22 - connecting assembly; 221 - mounting plate; 222 - rotating shaft seat; 223 - bearing; 224 - adjusting seat; 225 - retaining ring; 226 - bolt; 227 - first nut; 228 - second nut; 229 - third nut; 23 - driving assembly; 231 - rotating shaft; 232 - handle; 24 - traction wheel;

[0038] 3 - dynamometer; 31 - first traction rope; 32 - second traction rope; 33 - shackle;

[0039] 4 - guide wheel; 41 - arc segment; 42 - groove; 43 - bottom plate; 44 - jack; 45 - support shaft; 46 - rib;

[0040] 5 - main bearing;

[0041] 6 - main shaft base. Detailed implementation manners

[0042] 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 of 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.

[0043] The core of the present invention is to provide a friction torque detection device, which can improve the measurement accuracy and convenience of the friction torque of the main bearing.

[0044] It should be noted that in this embodiment, the orientation or positional relationship indicated by "up", "down", "front", "rear", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present application 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, and therefore should not be construed as a limitation to the present application.

[0045] Please refer to Figure 1 and Figure 8, the present invention provides a friction torque detection device, including a positioning seat 1, a traction mechanism 2, a dynamometer 3 and a guide wheel 4. Among them, the positioning seat 1 is used to be fixed on the spindle base 6; the traction mechanism 2 is rotatably arranged on the positioning seat 1; one end of the dynamometer 3 is connected to the driving end of the traction mechanism 2 through a first traction rope 31, and the other end of the dynamometer 3 is connected to a second traction rope 32; the guide wheel 4 is used to be clamped on the outer circumference of the main bearing 5, and the second traction rope 32 is wound around the guide wheel 4; the traction mechanism 2 is used to drive the main bearing 5 to rotate, and the dynamometer 3 is used to detect the force generated by the rotation of the main bearing 5 and transmit the signal to the display device.

[0046] It should be noted that the spindle is sleeved in the main bearing 5. During operation, the spindle rotates together with the main bearing 5. Therefore, the rotational torque of the spindle can be measured by measuring the frictional torque of the main bearing 5.

[0047] The positioning seat 1 can be fixed on the spindle base 6, so that during the measurement process, the traction mechanism 2 does not move relative to the main bearing 5 to fix the acting point of the force.

[0048] The inner circumference of the guide wheel 4 is adapted to the outer circumference of the main bearing 5, and the guide wheel 4 is clamped with the main bearing 5. This connection method makes it more convenient to disassemble and assemble the guide wheel 4 and can improve the measurement convenience.

[0049] The traction mechanism 2 is connected to one end of the dynamometer 3 through the first traction rope 31, and the other end of the dynamometer 3 is connected to the guide wheel 4 through the second traction rope 32. Thus, the traction mechanism 2 is used to apply a force, and the force is transmitted to the guide wheel 4 through the two traction ropes to drive the guide wheel 4 to rotate, and then drive the bearing 223 seat to rotate. During this process, the dynamometer 3 can read the magnitude of the force in real time and transmit it to the display device. Since the position of the traction mechanism 2 relative to the main bearing 5 is fixed, the shortest distance (i.e., the force arm) from the acting point of the force to the axis of the main bearing 5 is fixed, and the display device can calculate the real-time data of the frictional torque of the main bearing 5 according to the torque formula. It should be noted that the traction mechanism 2 is rotatably connected to the positioning seat 1 to release the rotational freedom of the traction mechanism 2 and avoid hindering the traction rope from driving the guide wheel 4 (i.e., the main bearing 5) to rotate.

[0050] When the friction torque detection device provided in the above embodiment is in use, the guide wheel 4 is clamped on the outer circumference of the main bearing 5, the guide wheel 4 is driven to rotate by the traction mechanism 2, and then the main bearing 5 is driven to rotate. At the same time, the dynamometer 3 detects the force generated during the rotation of the main bearing 5 in real time and transmits the signal to the display device. Thus, the real-time data of the frictional torque of the main bearing 5 can be conveniently read, the measurement convenience is improved, and the frictional torque can be measured by rotating the main bearing 5 multiple times, making the measured value closer to the true value and improving the measurement accuracy.

[0051] To optimize the accuracy of torque measurement, on the basis of the above embodiment, please refer toFigure 1 , Figure 8 and Figure 9 , the guide wheel 4 has an arc structure and is used to be sleeved on the main bearing 5 and cooperate with it coaxially, and the rotation axis of the traction mechanism 2 is vertically arranged with respect to the positioning seat 1, and the driving end of the traction mechanism 2 and the guide wheel 4 are located on the same horizontal plane.

[0052] It can be understood that the cross-section of the main bearing 5 is circular, and the guide wheel 4 has an arc structure and is sleeved coaxially with the main bearing 5, ensuring that the guide wheel 4 is in close contact with the main bearing 5, so that the shortest distance from the second traction rope 32 to the axis of the main bearing 5 is always a fixed value r, r = r 0 +d, where r 0 is the radius of the main bearing 5, and d is the thickness of the guide wheel 4. Therefore, to ensure the accuracy of the measurement results, a force needs to be applied along the tangential direction of the guide wheel 4, that is, to make the two traction ropes always along the tangential direction of the guide wheel 4. To achieve this effect, the rotation axis of the traction mechanism 2 is vertically arranged with respect to the positioning seat 1. Therefore, during installation, the positioning seat 1 is arranged perpendicular to the axis of the main shaft (that is, the axis of the main bearing 5), and the rotation axis of the traction mechanism 2 can be arranged parallel to the axis of the main bearing 5. At the same time, the driving end of the traction mechanism 2 and the guide wheel 4 are located on the same horizontal plane, so as to ensure that during the rotation of the guide wheel 4 driven by the traction ropes through the first traction rope 31 and the second traction rope 32, the two traction ropes are always along the tangential direction of the guide wheel 4, thus avoiding the introduction of errors caused by the deviation of the applied force direction from the tangential direction and ensuring the accuracy of the torque measurement.

[0053] Considering the specific setting of the positioning seat 1, on the basis of the above embodiment, please refer to Figure 3 , the positioning seat 1 includes a bottom beam 11, a connecting member 112 and a support seat 13. The connecting member 112 is arranged at one end of the bottom beam 11 and is used to connect the main shaft base 6. The support seat 13 is vertically arranged at the other end of the bottom beam 11, and the traction mechanism 2 is rotatably arranged on the support seat 13 with the center line of the support seat 13 as the rotation axis.

[0054] Specifically, the bottom beam 11 has strong structural strength and load-bearing capacity, and can stably support the traction mechanism 2, thereby improving the structural stability of the device. In addition, a connecting member 112 is arranged at one end of the bottom beam 11, and a support seat 13 is vertically arranged at the other end of the bottom beam 11. In this way, when installing the positioning seat 1, the bottom beam 11 can be arranged along the direction perpendicular to the axis of the main shaft, and is fixedly installed on the main shaft base 6 by using the connecting member 112. At this time, the center line of the support seat 13 can be parallel to the axis of the main shaft (that is, the axis of the main bearing 5). Furthermore, when installing the traction mechanism 2, it is only necessary for the traction mechanism 2 to be rotatable with the center line of the support seat 13 as the rotation axis. The support seat 13 not only plays a supporting role, but also plays a role of rotational installation and guiding, so as to ensure that the rotation axis of the traction mechanism 2 is arranged parallel to the axis of the main bearing 5, and the installation is convenient.

[0055] Considering the specific structure of the support base 13, on the basis of the above embodiment, please refer to Figure 3 , the support base 13 is a welded part, and the material is a square tube 131 of Q235B. The front flange 132 and the rear flange 133 are respectively welded at both ends of the square tube 131. The front flange 132 is connected to the bottom beam 11 through bolts and nuts, and the rear flange 133 is rotatably connected to the traction mechanism 2.

[0056] Considering the specific structure of the bottom beam 11, on the basis of the above embodiment, please refer to Figure 3 , the bottom beam 11 includes a bottom beam main body 111, a vertical plate 112 and a rib plate 113. The bottom beam main body 111 is a rectangular shell structure. The vertical plate 112 is integrally arranged at the middle position inside the rectangular shell structure, and the rib plates 113 are integrally and vertically arranged on both sides of the vertical plate 112.

[0057] It can be understood that the vertical plate 112 is integrally arranged at the middle position inside the rectangular shell structure, which can make the cross-section of the bottom beam 11 in an I shape, thereby significantly enhancing the load-bearing capacity of the bottom beam 11. Further, the rib plates 113 are welded on both sides of the vertical plate 112, and the rib plates 113 can further enhance the load-bearing capacity of the bottom beam 11. It should be noted that several rib plates 113 can be welded on each side of the vertical plate 112. The several rib plates 113 are arranged at intervals along the length direction of the vertical plate 112. The number of rib plates 113 can be set according to actual needs and is not unique. In addition, the bottom beam 11 is a welded part, and the material is Q235B.

[0058] Considering the specific structure of the connecting member 112, on the basis of the above embodiment, please refer to Figure 1 and Figure 2 , the connecting member 112 is a welded part, and the material is Q235B. The connecting member 112 includes a connecting member body 121, an end cover 122 welded to one end of the connecting member 112, and a baffle 123 welded to the other end of the connecting member 112. Two steel pipes 114 arranged side by side are welded at one end of the bottom beam 11. Two connecting members 112 are provided. The connecting member bodies 121 of the two connecting members 112 are correspondingly inserted into the two steel pipes 114, and the baffle plates 123 of the two connecting members 112 are both provided with insertion shafts 124. The shaft heads of the insertion shafts 124 are used to be inserted into the positioning holes of the main shaft and are threadedly matched with it.

[0059] To improve the firmness of the installation of the bottom beam 11, on the basis of the above embodiment, please refer to Figure 3 and Figure 8 , a limiting plate 14 is provided on one side of the bottom beam 11 facing the traction mechanism 2. The limiting plate 14 is located between the connecting member 112 and the support base 13 and is used to abut against the edge of the main shaft base 6, so as to limit the relative movement of the bottom beam 11 with respect to the main shaft, and together with the connecting member 112, play a role in firmly installing the bottom beam 11.

[0060] Considering the specific configuration of the traction mechanism 2, based on the above embodiment, please refer to Figure 4 The traction mechanism 2 includes a support 21, a connecting assembly 22, a driving assembly 23, a traction wheel 24 and a transmission assembly. The support 21 is rotatably connected to the support seat 13 through the connecting assembly 22. The driving end of the driving assembly 23 is arranged at one end of the support 21, and the traction wheel 24 is arranged at the other end of the support 21 and is wound with a first traction rope 31. The driving end of the driving assembly 23 and the traction wheel 24 are connected by transmission through the transmission assembly. In this way, the traction wheel 24 is the driving end of the traction mechanism 2. The driving assembly 23 can drive the traction wheel 24 to rotate through the rotating assembly. Since the first traction rope 31 is wound around the traction wheel 24, the rotation of the traction wheel 24 can retract and release the first traction rope 31, thereby pulling the guide wheel 4 and the main bearing 5 to rotate. It should be particularly pointed out that the above-mentioned traction wheel 24 and the traction rope are used to pull the main bearing 5 to rotate. The elastic deformation characteristics of the traction rope are used, and the dynamometer 3 is combined to monitor the traction force changes in real time, so that the friction torque of the main bearing 5 when rotating can be accurately measured.

[0061] In a specific embodiment, the transmission assembly includes a main gear and a sub-gear, the main gear is sleeved on the driving end of the driving assembly 23, and the sub-gear can be rotatably arranged in the support 21 and meshed between the main gear and the traction wheel 24, so that the meshing transmission of the main gear and the sub-gear can realize the power transmission between the driving assembly 23 and the traction wheel 24.

[0062] In a specific embodiment, the support 21 is a U-shaped structure, and the driving ends of the traction wheel 24 and the drive assembly 23 are both inserted between the two side plates of the U-shaped support 21 and are staggered from top to bottom. The support 21 with this structural arrangement has better structural stability and can stably support the traction wheel 24, the drive assembly 23 and the transmission assembly.

[0063] In a specific embodiment, please refer to Figure 4 The driving assembly 23 includes a rotating shaft and a handle 232. The rotating shaft is rotatably inserted on the support 21 and arranged parallel to the axis of the traction wheel 24. One end of the rotating shaft extends out of the support 21 and is connected to the handle 232. In this way, the rotating shaft is the driving end of the driving assembly 23. The rotating shaft can be driven to rotate by rotating the handle 232, and the rotating shaft then drives the traction wheel 24 to rotate through the transmission assembly. Of course, the driving assembly 23 can also adopt other driving structures, such as directly using a motor, the rotating shaft 231 of the motor is inserted on the support 21 and arranged parallel to the axis of the traction wheel 24, and starting the motor can also drive the traction wheel 24 to rotate.

[0064] Considering the specific structure of the connecting component 22, based on the above embodiment, please refer to Figure 4 and Figure 10, the connecting component 22 includes a mounting plate 221, a rotating shaft seat 222 and an adjusting seat 224. One side surface of the mounting plate 221 is connected to the support 21, and the other side surface is provided with the rotating shaft seat 222. The rotating shaft seat 222 is sleeved with the adjusting seat 224 through a bearing 223. The adjusting seat 224 is connected to the support seat 13. Among them, the axis of the bearing 223 and the center line of the support seat 13 are collinear.

[0065] Specifically, one side surface of the mounting plate 221 is connected to the bottom plate 43 of the U-shaped support 21 through bolts and nuts, and the other side surface is also connected to the flange of the rotating shaft seat 222 through bolts and nuts. A bearing 223 is sleeved on the rotating shaft seat 222, and an adjusting seat 224 is sleeved on the bearing 223. And one end of the bearing 223 away from the support 21 is connected to a retaining ring 225 through bolts and nuts. The retaining ring 225 is clamped on the inner ring wall of the adjusting seat 224 by limit, so as to realize the rotational connection between the rotating shaft seat 222 and the adjusting seat 224. Further, one end of the adjusting seat 224 away from the support 21 has a flange, and this flange is connected to the rear flange 133 of the support seat 13 through bolts and nuts, so as to realize the rotational connection between the support 21 and the support seat 13. It should be particularly noted that the connecting component 22 arranged with the above structure not only realizes the detachable rotational connection between the support 21 and the support seat 13 to facilitate the disassembly and maintenance of the traction mechanism 2, but also can reduce the friction loss by using the bearing 223, ensure the coaxial positioning accuracy of the support 21 and the support seat 13, improve the rotational stability of the support 21, and avoid eccentric rotation from affecting the application of the tangential force.

[0066] To facilitate the installation and adjustment of the position of the adjusting seat 224, on the basis of the above embodiment, please refer to Figure 10 , a plurality of bolts 226 are uniformly arranged around the center line of the adjusting seat 224. The bolts 226 penetrate through the adjusting seat 224 and are inserted into the bolt holes of the support seat 13, and three nuts are provided on the bolts 226. The first nut 227 is fastened to one side surface of the flange of the adjusting seat 224, the second nut 228 is fastened to the other side surface of the flange of the adjusting seat 224, and the third nut 229 is fastened to the support seat 13.

[0067] With the above structure for installing the adjusting seat, on the one hand, the three nuts on each bolt 226 can make the connection force more uniform, effectively avoid the loosening of the bolt 226, thereby improving the reliability and stability of the connection, and further improving the firmness of the installation of the traction mechanism 2; on the other hand, the position of the adjusting seat 224 relative to the support seat 13 can be adjusted by adjusting the positions of the first nut 227 and the second nut 228, so that the guide wheel 4 can be adjusted to the horizontal plane where the guide wheel 4 is located, which is beneficial to ensuring that the two traction ropes are always along the tangential direction of the guide wheel 4.

[0068] Considering the specific setting of the dynamometer 3, on the basis of the above embodiment, please refer to Figure 5, shackles 33 are provided at both ends of the dynamometer 3, and the first traction rope 31 and the second traction rope 32 are respectively passed through the two shackles 33. It should be noted that the shackle 33 adopts a detachable snap structure to facilitate the disassembly and assembly of the traction ropes at both ends of the dynamometer 3.

[0069] In a specific embodiment, both the first traction rope 31 and the second traction rope 32 are made of steel wire ropes, so that each traction rope has a strong load-bearing capacity, thereby improving the safety and reliability of the traction of the traction rope.

[0070] Considering the specific setting of the guide wheel 4, on the basis of the above embodiment, please refer to Figure 6 and Figure 7 , the guide wheel 4 includes a plurality of arc segments 41 connected end to end in sequence and joined together. One end of the arc segment 41 is provided with a groove 42 extending around the center of the arc segment 41 for winding the second traction rope 32. The other end of the arc segment 41 is provided with a bottom plate 43, and the bottom plate 43 is provided with a plurality of jacks 44 arranged evenly around the center of the arc segment 41. A support shaft 45 is inserted into the jack 44 for connecting the main bearing 5.

[0071] In the above structure, a plurality of arc segments 41 are connected end to end in sequence to form the guide wheel 4. This guide wheel 4 is a detachable structure, and the applicable range of the guide wheel 4 can be improved by adjusting the number of arc segments 41 joined together to match and fix main bearings 5 of different diameter specifications. In addition, one end of each arc segment 41 is provided with a groove 42 extending around the center of the arc segment 41, which can firmly embed the second traction rope 32 in the grooves 42 of the plurality of arc segments 41 to improve the firmness of the connection between the second traction rope 32 and the guide wheel 4, and further ensure the smooth rotation of the main bearing 5 when pulled. Further, the other end of each arc segment 41 is provided with a bottom plate 43, and the bottom plate 43 is provided with a plurality of jacks 44 arranged evenly around the center of the arc segment 41. The plurality of jacks 44 correspond to the plurality of support shafts 45. As Figure 11 shown, one end of the support shaft 45 is threadedly connected to the mounting hole on the front end cover 122 of the main bearing 5, and the other end of the support shaft 45 passes through the jack 44 and is fastened to the bottom plate 43 by a nut to realize the firm connection between the guide wheel 4 and the main bearing 5, thereby ensuring the smooth rotation of the main bearing 5 when pulled.

[0072] In a specific embodiment, please refer to Figure 7 , the bottom plate 43 is flush with one side wall of the groove 42, and the support shaft 45 is arranged on the plate surface of the bottom plate 43 facing the other side wall of the groove 42 to make reasonable use of space and enable the guide wheel 4 and the main bearing 5 to be closely connected together, which is beneficial to further improving the firmness of the connection between the two.

[0073] In addition, a plurality of ribs 46, which are integrally connected to the bottom of the groove 42, are further provided on the surface of the bottom plate 43 facing the other side wall of the groove 42, so as to improve the stability of the connection between the bottom plate 43 and the arc section 41, and further improve the stability of the overall structure of the guide wheel 4.

[0074] To prevent the second towing rope 32 from detaching from the guide wheel 4, on the basis of the above embodiment, please refer to Figure 7 , a clamping hole is provided in the groove 42 of the arc section 41, and the second towing rope 32 is fixed in the clamping hole, so that the second towing rope 32 can be firmly installed on the guide wheel 4, thereby preventing the second towing rope 32 from detaching from the guide wheel 4 and improving the safety and reliability of the measurement.

[0075] It should be noted that in this specification, relational terms such as first and second are only used to distinguish one entity from several other entities, and do not necessarily require or imply any actual relationship or order between these entities.

[0076] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other.

[0077] The friction torque detection device provided by the present invention has been introduced in detail above. Specific examples are used herein to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A friction torque detection device, characterized in that: include: A positioning seat (1) used for being fixed on a spindle base (6); A traction mechanism (2) rotatably disposed on the positioning seat (1); A dynamometer (3), one end of which is connected to the driving end of the traction mechanism (2) via a first traction rope (31), and the other end of the dynamometer (3) is connected to a second traction rope (32); A guide wheel (4) is used for being fixed to the outer periphery of the main bearing (5), and the second traction rope (32) is wound around the guide wheel (4); The traction mechanism (2) is used to drive the main bearing (5) to rotate, and the dynamometer (3) is used to detect the force generated by the rotation of the main bearing (5) and transmit the signal to a display device.

2. The friction torque detection device according to claim 1, characterized in that: The guide wheel (4) is of an arc structure and is used to be sleeved on the main bearing (5) and coaxially matched, and the rotation axis of the traction mechanism (2) is arranged perpendicular to the positioning seat (1), and the driving end of the traction mechanism (2) and the guide wheel (4) are located in the same horizontal plane.

3. The friction torque detection device according to claim 1, characterized in that: The positioning seat (1) comprises a bottom beam (11), a connecting member (112) and a supporting seat (13); the connecting member (112) is arranged at one end of the bottom beam (11) and is used to connect the main shaft base (6); the supporting seat (13) is arranged vertically at the other end of the bottom beam (11); and the traction mechanism (2) is rotatably arranged on the supporting seat (13) with the center line of the supporting seat (13) as a rotation axis.

4. The friction torque detection device according to claim 3, characterized in that: A limiting plate (14) is provided on a side of the bottom beam (11) facing the traction mechanism (2); the limiting plate (14) is located between the connecting member (112) and the supporting seat (13) and is used to abut against an edge of the main shaft base (6).

5. The friction torque detection device according to claim 3, characterized in that: The bottom beam (11) comprises a bottom beam body (111), a vertical plate (112) and a rib plate (113); the bottom beam body (111) is a rectangular shell structure; the vertical plate (112) is integrally arranged in the middle of the rectangular shell structure; and the rib plates (113) are integrally arranged vertically on both sides of the vertical plate (112).

6. The friction torque detection device according to claim 3, characterized in that: The traction mechanism (2) comprises a support (21), a connecting assembly (22), a driving assembly (23), a traction wheel (24) and a transmission assembly; the support (21) is rotatably connected to the support seat (13) via the connecting assembly (22); a driving end of the driving assembly (23) is arranged at one end of the support (21); the traction wheel (24) is arranged at the other end of the support (21) and is wound around the first traction rope (31); and the driving end of the driving assembly (23) and the traction wheel (24) are transmission-connected via the transmission assembly.

7. The friction torque detection device according to claim 6, characterized in that: The connecting assembly (22) comprises a mounting plate (221), a rotating shaft seat (222) and an adjusting seat (224); one side of the mounting plate (221) is connected to the support (21), and the other side is provided with the rotating shaft seat (222); the rotating shaft seat (222) is sleeved with the adjusting seat (224) via a bearing (223); the adjusting seat (224) is connected to the supporting seat (13), wherein the axis of the bearing (223) and the center line of the supporting seat (13) are collinear.

8. The friction torque detection device according to claim 7, characterized in that: A plurality of bolts (226) are evenly arranged around the center line of the adjustment seat (224); the bolts (226) penetrate the adjustment seat (224) and are inserted into the bolt holes of the support seat (13); and three nuts are provided on the bolts (226); a first nut (227) is fastened to one side of the flange of the adjustment seat (224); a second nut (228) is fastened to the other side of the flange of the adjustment seat (224); and a third nut (229) is fastened to the support seat (13).

9. The friction torque detection device according to any one of claims 1 to 8, characterized in that: The guide wheel (4) comprises a plurality of arc segments (41) connected end to end and assembled together in sequence; one end of the arc segment (41) is provided with a groove (42) extending around the center of the arc segment (41) for winding the second traction rope (32); the other end of the arc segment (41) is provided with a bottom plate (43); the bottom plate (43) is provided with a plurality of insertion holes (44) evenly arranged around the center of the arc segment (41); a support shaft (45) is inserted into the insertion hole (44) for connecting to the main bearing (5).

10. The friction torque detection device according to claim 9, characterized in that: A clamping hole is provided in the groove (42) of the circular arc segment (41), and the second traction rope (32) is fixed in the clamping hole.

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