Cardan drive gear box

Abstract

The present application relates to the technical field of gear box, and disclose a kind of universal traction gear box, including two mutually rotating gear boxes, and the rotational axis position of two gear boxes is provided with female shaft, and the position of female shaft in two gear boxes is fixed with bevel gear respectively, two gear boxes are also provided with sub shaft respectively, and one end of each sub shaft is fixed with the bevel gear engaged with bevel gear in gear box, and the other end is connected power input end or power output end and penetrates the box wall of corresponding gear box, and oil detection device is also vertically arranged in each gear box, and the oil detection device includes vertically arranged composite vertical pipe, and detection bin and oil pump are sequentially connected above the composite vertical pipe. Solve the problem that gear box lacks effective oil detection mechanism in the prior art, the viscosity of lubricating oil will significantly increase under low temperature environment, and the remaining amount of oil cannot be accurately judged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gearboxes, in particular to a universal traction gearbox. BACKGROUND

[0002] In agricultural production, the treatment of crop straw such as corn straw is an important link. These straws can not only be used as feed and fuel, but also can be recycled through methods such as returning to the field, so efficient collection and bundling of the straws is crucial. As a key device for completing this work, the performance of the straw bundling machine directly affects the efficiency and cost of straw treatment.

[0003] The universal traction gearbox, as a mechanical device capable of achieving multidirectional power transmission, has a wide range of applications in the transmission system of traditional straw bundling machines. It has a small radius of rotation, does not require a wide-angle transmission shaft, reduces the overall production cost of the straw bundling machine, improves the operating efficiency of the straw bundling machine, and is also a split structure, facilitating disassembly and maintenance. The traditional universal traction gearbox is usually composed of two rotatingly connected gearboxes, and power transmission is achieved through a female shaft arranged at the rotating axis position. The female shaft is fixed with bevel gears at the internal positions of the two gearboxes. At the same time, a male shaft is arranged on each of the two gearboxes, and the male shaft is fixed with a gear meshing with the bevel gear at one end and penetrates the gearbox and connects the rotating input end and the rotating output end to achieve universal transmission of power. For example, a speed-adjusting traction gearbox for agricultural machinery disclosed in patent CN117329274B includes a gearbox, an input shaft, an output shaft, and a rotating shaft arranged on the gearbox. The gearbox includes a speed-adjusting gearbox and a rotating gearbox, and the rotating gearbox freely rotates around the speed-adjusting gearbox with the rotating shaft as the center of rotation.

[0004] However, the existing universal traction gearbox still has some deficiencies in actual operation. On the one hand, the lubricating oil in the gearbox may increase in impurities and decrease in performance after long-term use, which may cause increased gear wear, reduced transmission efficiency, and even equipment failure. However, the current gearbox lacks an effective oil detection mechanism, making it difficult to monitor the oil condition in real time and perform timely maintenance. On the other hand, in low-temperature environments, the viscosity of the lubricating oil increases significantly, and the flowability decreases, which not only affects the suction and spraying effect of the oil, leading to insufficient lubrication of the gears, but also increases the resistance of power transmission, further reducing the operating efficiency of the equipment. In addition, the existing gearbox usually lacks reliable liquid level detection devices, and cannot accurately determine the remaining amount of oil, which may cause equipment damage due to insufficient oil. SUMMARY

[0005] (I) Technical problems solved

[0006] In view of the defects of the prior art, the universal traction gear box has the advantages of real-time monitoring of oil state and timely maintenance, sufficient lubrication of gears, avoidance of large oil lubrication resistance caused by low temperature, and real-time detection of lubricating oil level, and solves the problems of lack of effective oil detection mechanism in the prior art gear box, significant increase in viscosity of lubricating oil under low temperature environment, and inability to accurately determine the remaining amount of oil.

[0007] (II) Technical solutions

[0008] To achieve the above object, the present application provides the following technical solutions:

[0009] A universal traction gear box comprises two mutually rotating gear boxes, a female shaft is arranged at the rotating axis position of the two gear boxes, a bevel gear is fixed at the position of the female shaft in the two gear boxes, a male shaft is further arranged on each gear box, one end of each male shaft is fixed with a bevel gear engaged with the bevel gear in the gear box, the other end of each male shaft penetrates the wall of the corresponding gear box and is connected with a power input end or a power output end, and an oil detection device is vertically arranged in each gear box, the oil detection device comprises a composite vertical pipe arranged vertically, and a detection bin and an oil pump are sequentially connected above the composite vertical pipe.

[0010] The composite vertical pipe is provided with a liquid suction port at the bottom for sucking lubricating oil at the bottom of the gear box, and a heating wire is arranged in the pipe wall of the composite vertical pipe, so that the heated lubricating oil is more easily sucked by the composite vertical pipe.

[0011] A filter screen is arranged in the detection bin for filtering impurities in the lubricating oil and judging the impurity content according to the resistance, and the heated lubricating oil avoids the influence of viscosity on the resistance.

[0012] One end of a liquid outlet of the oil pump is communicated with one end of a liquid spraying pipe, and the other end of the liquid spraying pipe is aligned with the top of the bevel gear, so that the heated lubricating oil is sprayed on the bevel gear to improve the lubrication efficiency.

[0013] Preferably, a floating ring is sleeved on the composite vertical pipe, the floating ring is located in the area where the lubricating oil is heated, and the heated lubricating oil makes the floating ring more easily float on the top.

[0014] A heating device is arranged at the top of the composite vertical pipe, the heating wire in the composite vertical pipe is connected with a heating module in the heating device, and a distance sensor cooperating with the floating ring is further arranged in the heating device.

[0015] Preferably, the outer wall position of the rotating connection of the two gearboxes is provided with an inter-box detection device, which comprises a friction plate provided on one of the gearboxes and a composite detection unit provided on the other gearbox, the friction plate being a circular arc-shaped rubber pad attached to the circular outer wall of the gearbox, and the composite detection unit comprising a level, a pressure sensor and a rotary encoder, the level being used to detect the horizontal inclination state of the gearbox.

[0016] A rotating wheel is provided on the composite detection unit, which is attached to the friction plate, and the rotating shaft of the rotating wheel is fixed to the rotary encoder. When the gearboxes rotate relative to each other, the friction plate drives the rotating wheel to rotate, and the rotary encoder is used to detect the rotation angle of the friction plate, thereby detecting the rotation angle of the two gearboxes.

[0017] An elastic top column is provided on the top of the composite detection unit, which is attached to the bottom of the outer wall of the gearbox fixedly connected with the friction plate, and a spring is provided at the bottom of the elastic top column, which is attached to the pressure sensor. The pressure sensor is used to detect the shaking between the two gearboxes.

[0018] Preferably, the oil detection device is arranged at the corner position in the gearbox, and the oil detection device comprises a tank wall, a partition plate is arranged in the tank wall, the partition plate divides the tank wall into upper and lower two parts, the composite vertical pipe and the floating ring are arranged in the lower half of the tank wall, the heating device, the detection tank and the oil pump are arranged in the upper half of the tank wall, a liquid passage hole is arranged on the lower half of the tank wall, the liquid injection pipe passes through the upper half of the tank wall, and the tank wall wraps the floating ring in the lower half to prevent the floating ring from moving due to the rotation of the gear, thereby causing the floating ring to damage the internal structure of the gearbox. The partition plate separates the lubricating oil from the upper half of the tank wall, thereby reducing the difficulty of maintenance.

[0019] Preferably, a support pipe is arranged at the top of the oil pump, a tee pipe is arranged at the connection position between the outlet of the oil pump and the liquid injection pipe, the support pipe is inserted into the last through hole located at the top except for the oil pump and the liquid injection pipe, and the support pipe is connected to the lubricating oil inlet of the gearbox, thereby playing the roles of supplementing lubricating oil and supporting the oil pump.

[0020] Preferably, a spring is arranged on the side close to the oil pump, and the other end of the spring is arranged on the pressure sensor, the pressure sensor is fixed on the top of the detection tank or at the bottom position connected with the detection tank, and the pressure sensor is used to detect the upward pressure of the partition plate, thereby analyzing the resistance of the lubricating oil passing through the filter screen.

[0021] Preferably, a moisture sensor is further arranged in the detection tank, and the moisture sensor is used to detect the moisture content in the heated lubricating oil.

[0022] Preferably, a maintenance window is arranged on the gear box side wall corresponding to the upper half of the tank wall, and the detection tank or the filter screen in the detection tank or other components in the upper half of the tank wall can be replaced by opening the maintenance window.

[0023] Preferably, the oil pump is a double screw pump, which comprises a driving screw and a driven screw arranged in parallel in a pump shell, one end of the driving screw extends out of the pump shell and is connected to a driving motor, the driving motor is electrically connected to the central control unit, the pump shell is respectively provided with a liquid inlet communicated with the detection tank and a liquid outlet communicated with the liquid injection pipe, when the driven screw is reversely rotated by the driving screw, the meshing space volume of the two screws gradually decreases along the axial direction, forming a continuous sealed chamber, the lubricating oil in the detection tank is sucked from the liquid inlet and pushed to the liquid outlet, the central control unit adjusts the rotating speed of the driving motor according to the filter screen resistance data detected by the pressure sensor and the water content of the lubricating oil detected by the moisture sensor, the inner wall of the pump shell is coated with a wear-resistant coating, the wear-resistant coating is a tungsten carbide-based composite coating, which is used to reduce the friction between the screw and the inner wall of the pump shell and prolong the service life of the oil pump.

[0024] Preferably, an ultraviolet sterilization assembly is arranged in the detection tank to kill and sterilize the microorganisms in the detection tank and prevent the microorganisms from spreading and polluting the lubricating oil in the gear box.

[0025] (Three) beneficial effects

[0026] Compared with the prior art, the present application provides a universal traction gear box, which has the following beneficial effects:

[0027] 1. The universal traction gear box, by arranging the oil detection device comprising the composite vertical pipe, the detection tank and the oil pump in the gear box, the liquid suction port at the bottom of the composite vertical pipe can suck the lubricating oil at the bottom of the gear box, the heating wire in the pipe wall heats the lubricating oil, reduces its viscosity, and makes the lubricating oil more easily sucked and the fluidity enhanced; the filter screen in the detection tank can filter the impurities in the lubricating oil, and the heating is used to eliminate the influence of the lubricating oil viscosity on the filter screen resistance, so as to accurately judge the impurity content and timely find the internal wear of the gear box; the detected lubricating oil is sprayed on the top of the bevel gear through the liquid injection pipe under the action of the oil pump, which on the one hand ensures the sufficient lubrication of the bevel gear and reduces the friction and wear, and on the other hand realizes the recycling of the lubricating oil, avoids the gear box failure caused by impurity accumulation and insufficient lubrication, effectively improves the stability and reliability of the gear box operation, prolongs the service life, realizes the efficient detection and recycling of the lubricating oil, and achieves the effect of improving the operation stability and service life of the gear box.

[0028] 2、The universal traction gear box, by sleeving the floating ring on the composite vertical pipe, and setting the heating device and the distance sensor on the top of the vertical pipe, realizes real-time monitoring of the lubricating oil level and temperature, achieves the effect of accurately grasping the lubrication state of the gear box, and prevents faults, the floating ring is located in the area where the lubricating oil is heated, the temperature of the heated lubricating oil rises and the density decreases, so that the floating ring is more likely to float to the top of the liquid surface, the heating module in the heating device controls the power of the heating wire in the composite vertical pipe, and the oil temperature is accurately adjusted; at the same time, the distance sensor in the heating device cooperates with the floating ring to monitor the position of the floating ring in real time, the lubricating oil level and the temperature change are fed back through the position change of the floating ring, and once an abnormality is found, timely warning can be given, so that the staff can take measures in advance, effectively prevent gear box failure caused by insufficient lubrication or abnormal oil temperature, and ensure safe and stable operation of the equipment.

[0029] 3、The universal traction gear box, by setting the inter-box detection device containing the friction plate and the composite detection unit on the outer wall of the rotating connection of the two gear boxes, realizes comprehensive monitoring of the relative motion state of the gear boxes, and achieves the effect of improving the precision and reliability of the universal transmission system, the friction plate is a circular arc-shaped rubber pad attached to the circular outer wall of the gear box, and moves with the rotation of the gear box; the level meter in the composite detection unit detects the horizontal inclination state of the gear box in real time, ensures that the equipment installation and operation posture is normal, the rotating wheel on the composite detection unit is attached to the friction plate, when the gear boxes rotate relative to each other, the friction plate drives the rotating wheel to rotate, the rotary encoder detects the rotation of the rotating shaft of the rotating wheel, accurately calculates the rotation angle of the friction plate, and further obtains the relative rotation angle of the two gear boxes, realizes accurate monitoring of the universal transmission angle, and according to the horizontal inclination state of the gear box, the relative rotation angle of the two gear boxes and the liquid level height detected by the floating ring, the total amount of lubricating oil of the two gear boxes under any condition can be judged, in addition, the elastic top column at the top of the composite detection unit is attached to the bottom of the gear box outer wall fixedly connected with the friction plate, and the bottom spring cooperates with the pressure sensor to sensitively detect the shaking condition between the two gear boxes, and the oil pump is started according to the shaking, so that the lubricating oil in the gear box is detected in time when an emergency occurs. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of the present application.

[0031] Figure 2 It is a sectional view of the present application.

[0032] Figure 3 It is a sectional view of the present application.

[0033] Figure 4 It is a structural schematic diagram of one perspective of the gear box 1 of the present application.

[0034] Figure 5Another perspective view of the gear box 1 of the present application.

[0035] Figure 6 A perspective view of the oil detection device 4 of the present application.

[0036] Figure 7 An exploded view of the oil detection device 4 of the present application.

[0037] Figure 8 A perspective view of the compartment wall 41 of the present application.

[0038] Figure 9 A perspective view of the composite vertical pipe 42 and the floating ring 43 of the present application.

[0039] Figure 10 A half-section view of the detection compartment 44 of the present application.

[0040] Figure 11 A perspective view of the oil pump 45 and the liquid injection pipe 46 of the present application.

[0041] Figure 12 An enlarged view of the installation of the inter-box detection device 5 of the present application between two gear boxes 1.

[0042] Figure 13 A perspective view of the inter-box detection device 5 of the present application.

[0043] In the figure: 1, gear box; 2, sub-shaft; 3, mother-shaft; 11, oil seal; 12, bearing; 13, maintenance window; 4, oil detection device; 41, compartment wall; 42, composite vertical pipe; 43, floating ring; 44, detection compartment; 45, oil pump; 46, liquid injection pipe; 47, support pipe;

[0044] 411, partition plate; 412, liquid passage hole;

[0045] 421, liquid suction port; 422, heating device;

[0046] 441, filter screen; 442, moisture sensor; 443, pressure sensor;

[0047] 5, inter-box detection device; 51, friction plate; 52, composite detection unit; 521, rotating wheel; 522, elastic jacks. DETAILED DESCRIPTION

[0048] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0049] In the description of the present application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0050] In addition, fixed connection refers to the connection of parts or components after being fixed without any relative movement; transmission connection refers to a connection mode of transmitting mechanical movement or torque to other working components through a transmission member; sliding connection refers to a connection mode in which two objects are in contact but not fixed, and can slide relative to each other; and rotating connection refers to a connection mode in which two objects are in contact but not fixed, and can rotate relative to each other.

[0051] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0052] Embodiment one:

[0053] The present embodiment provides a universal traction gear box, which has the following technical features.

[0054] Please refer to Figures 1-13 A universal traction gear box, comprising two mutually rotating gear boxes 1, a female shaft 3 is arranged at the position of the rotation axis of the two gear boxes 1, the female shaft 3 is fixed with bevel gears at the positions in the two gear boxes 1, a male shaft 2 is further arranged on each of the two gear boxes 1, one end of each male shaft 2 is fixed with a bevel gear meshing with the bevel gear in the gear box 1, the other end of each male shaft 2 penetrates through the wall of the corresponding gear box 1 and is connected with a power input end or a power output end, and an oil detection device 4 is further vertically arranged in each gear box 1, the oil detection device 4 comprises a composite vertical pipe 42 arranged vertically, a detection bin 44 and an oil pump 45 are sequentially connected above the composite vertical pipe 42;

[0055] The composite vertical pipe 42 is provided with a suction port 421 at the bottom for sucking lubricating oil at the bottom of the gear box 1, and is provided with heating wires in the pipe wall, so that the heated lubricating oil is more easily sucked by the composite vertical pipe 42;

[0056] The detection bin 44 is provided with a filter screen 441 inside for filtering impurities in the lubricating oil and judging the impurity content according to resistance, and the heated lubricating oil avoids the influence of viscosity on resistance;

[0057] The outlet of the oil pump 45 is connected to one end of the liquid spraying pipe 46, and the other end of the liquid spraying pipe 46 is aligned with the top of the bevel gear, so that the heated lubricating oil is sprayed on the bevel gear to improve the lubricating efficiency.

[0058] In an optional embodiment, the composite vertical pipe 42 is sleeved with a floating ring 43, which is located in the area where the lubricating oil is heated, and the heated lubricating oil makes the floating ring 43 more easily float at the top.

[0059] The composite vertical pipe 42 is provided with a heating device 422 at the top, the heating wires in the composite vertical pipe 42 are connected to the heating module in the heating device 422, and the heating device 422 is also provided with a distance sensor cooperating with the floating ring 43.

[0060] It should be noted that the heating module includes a switch for controlling the on-off of the circuit, a temperature controller for automatically disconnecting the circuit when the temperature reaches the set value, a resistor or semiconductor element for adjusting the current size to control the heating power, a fuse for melting when the current is overloaded, and a power supply.

[0061] It should be noted that the floating ring 43 is provided with a permanent magnet, which moves with the liquid level and approaches the magnetic sensor such as reed switch and Hall element in the heating device 422, and outputs continuous electric signals through the change of magnetic field, so as to judge the liquid level according to the electric signals.

[0062] It should be noted that the female shaft 3 includes two shaft segments which are connected together by spline sliding connection, the main body parts of the two shaft segments are respectively located in the two gear boxes 1, the female shaft 3 is provided with an oil seal 11 and a bearing 12 at the position where it passes through the outer wall between the two gear boxes 1, and the male shaft 2 is also provided with an oil seal 11 and a bearing 12 at the position where it passes through the outer wall of the gear box 1.

[0063] Specifically, when the female shaft 3 passes through the wall of a gear box 1, it passes through a bearing 12, an oil seal 11 and another bearing 12 from inside to outside in sequence, or passes through a bearing 12 and an oil seal 11 from inside to outside in sequence.

[0064] Specifically, when the male shaft 2 passes through the wall of a gear box 1, it passes through two bearings 12 and an oil seal 11 from inside to outside in sequence.

[0065] In an alternative embodiment, the outer wall position of the rotating connection of the two gear boxes 1 is provided with an inter-box detection device 5, which includes a friction sheet 51 provided on one of the gear boxes 1 and a composite detection unit 52 provided on the other gear box 1, the friction sheet 51 is a circular arc-shaped rubber pad attached to the circular outer wall of the gear box 1, and the composite detection unit 52 includes a level, a pressure sensor and a rotary encoder, the level is used to detect the horizontal inclination state of the gear box 1.

[0066] The composite detection unit 52 is provided with a rotating wheel 521, which is attached to the friction sheet 51, and the rotating shaft of the rotating wheel 521 is fixed to the rotary encoder, when the gear boxes 1 rotate relative to each other, the friction sheet 51 drives the rotating wheel 521 to rotate, and the rotary encoder is used to detect the rotation angle of the friction sheet 51, so as to detect the rotation angle of the two gear boxes 1.

[0067] The top of the composite detection unit 52 is provided with an elastic top column 522, which is attached to the bottom of the outer wall of the gear box 1 fixedly connected with the friction sheet 51, and the bottom of the elastic top column 522 is provided with a spring, which is attached to the pressure sensor, and the pressure sensor is used to detect the shaking between the two gear boxes 1.

[0068] It should be noted that when the level detects that the gear box 1 is in a horizontal state, no matter what angle the two gear boxes 1 rotate to, the two lubricating oil levels can be directly detected by the floating ring 43 in the two oil detection devices 4; when the level detects that the gear box 1 is in an inclined state, the inclination angle of the composite vertical pipe 42 of the gear box 1 provided with the level can be analyzed according to the horizontal inclination angle of the gear box 1, and the true total amount of lubricating oil can be analyzed in combination with the liquid level detected by the floating ring 43; and for the gear box 1 without the level, the inclination angle of the gear box 1 without the level can be determined according to the inclination angle of the gear box 1 provided with the level and the relative rotation angle of the two gear boxes 1, and the true total amount of lubricating oil can be analyzed in combination with the liquid level detected by the floating ring 43.

[0069] It should be noted that the starting mode of the oil pump 45 includes timed starting and trigger starting, the timed starting is started once every fixed time interval, and the trigger starting is started once when the elastic top column 522 detects that the two gear boxes 1 are shaking, after the trigger starting, the starting time of the timed starting is refreshed.

[0070] In an optional embodiment, the oil detection device 4 is arranged at a corner position in the gear box 1, the oil detection device 4 comprises a tank wall 41, a partition plate 411 is arranged in the tank wall 41, the partition plate 411 divides the tank wall 41 into upper and lower two parts, a composite vertical pipe 42 and a floating ring 43 are arranged in the lower half of the tank wall 41, a heating device 422, a detection tank 44 and an oil pump 45 are arranged in the upper half of the tank wall 41, a liquid passage hole 412 is arranged on the lower half of the tank wall 41, a liquid injection pipe 46 passes through the upper half of the tank wall 41, and the tank wall 41 wraps the floating ring 43 in the lower half to prevent the floating ring 43 from moving and damaging the internal structure of the gear box 1 when the gear rotates. The partition plate 411 separates the lubricating oil from the upper half of the tank wall 41, reducing the difficulty of maintenance.

[0071] In an optional embodiment, a support pipe 47 is arranged at the top of the oil pump 45, a tee pipe is arranged at the connection between the outlet of the oil pump 45 and the liquid injection pipe 46, the support pipe 47 is inserted into the last through hole at the top of the tee pipe except for the oil pump 45 and the liquid injection pipe 46, and the support pipe 47 is connected to the lubricating oil inlet of the gear box 1. The support pipe 47 plays the dual roles of supplementing lubricating oil and supporting the oil pump 45.

[0072] In an optional embodiment, a spring is arranged on one side of the filter screen 441 close to the oil pump 45, and the other end of the spring is abutted against a pressure sensor 443. The pressure sensor 443 is fixed at the top of the detection tank 44 or at the bottom of the connection between the oil pump 45 and the detection tank 44. The pressure sensor 443 is used to detect the upward pressure of the partition plate 411, so as to analyze the resistance of the lubricating oil passing through the filter screen 441.

[0073] In an optional embodiment, a moisture sensor 442 is further arranged in the detection tank 44. The moisture sensor 442 is used to detect the water content in the heated lubricating oil.

[0074] It should be noted that the moisture sensor 442 realizes water content detection based on a capacitive sensing principle. Two parallel electrode plates are arranged inside the sensor to form a capacitor structure. When high-viscosity lubricating oil flows into the sensor cavity, the lubricating oil acts as the medium of the capacitor. Since there is a significant difference in the dielectric constant between water and lubricating oil, the dielectric constant of the mixed medium will change when water is mixed into the lubricating oil. The higher the water content, the greater the dielectric constant of the mixed medium. According to the formula C=εS / 4πkd, where ε is the dielectric constant, S is the area of the electrode plate, and d is the distance between the electrode plates, the capacitance value will increase accordingly. The built-in detection circuit of the sensor monitors the capacitance value in real time, converts it into an electrical signal through a signal processing module, and then converts the electrical signal into an accurate water content value through a calibration algorithm. Finally, the value is output to a display terminal or a control system, so as to realize accurate detection of the water content in high-viscosity lubricating oil.

[0075] In an optional embodiment, a maintenance window 13 is arranged on the side wall of the gear box 1 corresponding to the upper half of the tank wall 41, and the detection tank 44 or the filter screen 441 in the detection tank 44 or other components in the upper half of the tank wall 41 can be replaced by opening the maintenance window 13.

[0076] In an optional embodiment, the oil pump 45 is a double-screw pump, which includes a driving screw and a driven screw arranged in parallel in a pump shell, and the driving screw extends out of the pump shell and is connected to a driving motor, and the driving motor is electrically connected to the central control unit; the pump shell is respectively provided with a liquid inlet communicated with the detection tank 44 and a liquid outlet communicated with the liquid injection pipe 46; when the driven screw is reversely rotated by the driving screw, the meshing space volume of the two screws gradually decreases along the axial direction, forming a continuous sealed chamber, and the lubricating oil in the detection tank 44 is sucked from the liquid inlet and pushed to the liquid outlet; the central control unit adjusts the rotating speed of the driving motor according to the filter screen resistance data detected by the pressure sensor 443 and the water content of the lubricating oil detected by the water sensor 442; the inner wall of the pump shell is coated with a wear-resistant coating, which is a tungsten carbide-based composite coating, used to reduce the friction between the screw and the inner wall of the pump shell and prolong the service life of the oil pump 45.

[0077] In an optional embodiment, an ultraviolet sterilization assembly is arranged in the detection tank 44 to kill and prevent the spread of microorganisms in the detection tank 44 to contaminate the lubricating oil in the gear box 1.

[0078] Further, the gear box 1 is further provided with a central control unit, and the water sensor 442, the pressure sensor 443, the level, the pressure sensor and the rotary encoder in the composite detection unit 52 are electrically connected to the central control unit; the central control unit analyzes and judges the running fault of the gear box 1 according to the water content of the lubricating oil detected by the water sensor 442, the filter screen resistance data detected by the pressure sensor 443, and the running state data of the gear box 1 detected by the level and the rotary encoder, and controls the working state of the oil pump 45 and sends an alarm signal.

[0079] Working principle: the mother shaft 3 is connected with the sub shaft 2 through two sections of spline sliding connection, and the bevel gears at two ends are engaged with the bevel gears of the sub shaft 2, so that the relative rotation transmission of the two gear boxes 1 is realized, and the power is transmitted through the input / output end of the sub shaft 2. The oil detection device 4 sucks the lubricating oil at the bottom of the gear box 1 through the liquid suction port 421 at the bottom of the composite vertical pipe 42, and the heating wire in the pipe wall is used for heating to reduce the viscosity, so that the lubricating oil is easily sucked and the fluidity is enhanced; the filter screen 441 in the detection bin 44 can filter the impurities in the lubricating oil, and the influence of the viscosity of the lubricating oil on the resistance of the filter screen 441 is eliminated by heating, so that the impurity content is accurately judged, and the internal wear of the gear box 1 is found in time; the lubricating oil after detection is sprayed to the top of the bevel gear through the liquid spraying pipe 46 under the action of the oil pump 45 (double screw pump), on the one hand, the bevel gear is fully lubricated, and the friction and wear are reduced, on the other hand, the recycling of the lubricating oil is realized, the gear box 1 failure caused by impurity accumulation and insufficient lubrication is avoided, the stability and reliability of the gear box 1 operation are effectively improved, the service life is prolonged, the efficient detection and recycling of the lubricating oil are realized, and the effect of improving the operation stability and service life of the gear box 1 is achieved.

[0080] In summary, the universal traction gear box, by setting the oil detection device 4 containing the composite vertical pipe 42, the detection bin 44 and the oil pump 45 in the gear box 1, the liquid suction port 421 at the bottom of the composite vertical pipe 42 can suck the lubricating oil at the bottom of the gear box 1, the heating wire in the pipe wall heats the lubricating oil, reduces its viscosity, and makes the lubricating oil more easily sucked and the fluidity enhanced; the filter screen 441 in the detection bin 44 can filter the impurities in the lubricating oil, and the influence of the viscosity of the lubricating oil on the resistance of the filter screen 441 is eliminated by heating, so that the impurity content is accurately judged, and the internal wear of the gear box 1 is found in time; the lubricating oil after detection is sprayed to the top of the bevel gear through the liquid spraying pipe 46 under the action of the oil pump 45 (double screw pump), on the one hand, the bevel gear is fully lubricated, and the friction and wear are reduced, on the other hand, the recycling of the lubricating oil is realized, the gear box 1 failure caused by impurity accumulation and insufficient lubrication is avoided, the stability and reliability of the gear box 1 operation are effectively improved, the service life is prolonged, the efficient detection and recycling of the lubricating oil are realized, and the effect of improving the operation stability and service life of the gear box 1 is achieved.

[0081] The universal traction gear box realizes real-time monitoring of the lubricating oil level and temperature by sleeving the floating ring 43 on the composite vertical pipe 42 and arranging the heating device 422 and the distance sensor at the top of the vertical pipe, achieves the effect of accurately grasping the lubricating state of the gear box 1 and preventing faults, the floating ring 43 is located in the heated area of the lubricating oil, the temperature of the heated lubricating oil is increased and the density is reduced, so that the floating ring 43 is more easily floated to the top of the liquid surface, the heating module in the heating device 422 controls the power of the heating wire in the composite vertical pipe 42, and the oil temperature is accurately adjusted; at the same time, the distance sensor in the heating device 422 cooperates with the floating ring 43 to monitor the position of the floating ring 43 in real time, the lubricating oil level and temperature change are fed back through the position change of the floating ring 43, and once an abnormality is found, timely warning can be given, so that the staff can take measures in advance, effectively prevent the gear box 1 failure caused by insufficient lubrication or abnormal oil temperature, and ensure the safe and stable operation of the equipment.

[0082] The universal traction gear box realizes comprehensive monitoring of the relative motion state of the gear box 1 by arranging the inter-box detection device 5 containing the friction plate 51 and the composite detection unit 52 on the outer wall of the rotating connection of the two gear boxes 1, achieves the effect of improving the precision and reliability of the universal transmission system, the friction plate 51 is a circular arc-shaped rubber pad attached to the circular outer wall of the gear box 1 and moves with the rotation of the gear box 1; the level instrument in the composite detection unit 52 detects the horizontal inclination state of the gear box 1 in real time, ensures that the equipment installation and operation posture is normal, the rotating wheel 521 on the composite detection unit 52 is attached to the friction plate 51, when the gear boxes 1 rotate relative to each other, the friction plate 51 drives the rotating wheel 521 to rotate, the rotary encoder detects the rotation of the rotating shaft of the rotating wheel 521, accurately calculates the rotation angle of the friction plate 51, and further obtains the relative rotation angle of the two gear boxes 1, realizes accurate monitoring of the universal transmission angle, combined with the horizontal inclination state of the gear box 1, the relative rotation angle of the two gear boxes 1 and the liquid level height detected by the floating ring 43, the total amount of lubricating oil of the two gear boxes 1 under any condition can be judged, in addition, the elastic top column 522 at the top of the composite detection unit 52 is attached to the bottom of the gear box 1 outer wall fixedly connected with the friction plate 51, the bottom spring cooperates with the pressure sensor to sensitively detect the shaking condition between the two gear boxes 1, and the oil pump 45 is started according to the shaking, so that the lubricating oil in the gear box 1 is detected in time when an emergency occurs.

[0083] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other inventors can develop based on the same general inventive concepts embodied by the described embodiments. That is, although the present application is described in terms of particular embodiments and implementations, it is to be understood that the terminology used is for the purpose of descriptive clarity and that it should be taken in a descriptive sense and not a limiting sense.

[0084] While the embodiments of the application have been shown and described herein, it is to be understood that the application is not limited to these embodiments. Rather, many modifications, changes, substitutions, and alterations can be made to the embodiments of the application without departing from the spirit and scope of the application as defined by the appended claims and their equivalents.

Claims

1. A universal traction gear box, comprising two mutually rotating gear boxes (1), a female shaft (3) is arranged at the position of the rotating axis of the two gear boxes (1), a bevel gear is fixed at the position of the female shaft (3) in the two gear boxes (1) respectively, a male shaft (2) is further arranged on each of the two gear boxes (1), a bevel gear meshing with the bevel gear is fixed at one end of each male shaft (2) in the gear box (1), the other end of the male shaft (2) penetrates through the wall of the corresponding gear box (1) and is connected to a power input end or a power output end, characterized in that: an oil detection device (4) is further vertically arranged in each gear box (1), the oil detection device (4) comprises a composite vertical pipe (42) arranged vertically, a detection bin (44) and an oil pump (45) are sequentially connected above the composite vertical pipe (42); a liquid suction port (421) is arranged at the bottom of the composite vertical pipe (42) for sucking lubricating oil at the bottom of the gear box (1), a heating wire is arranged in the wall of the composite vertical pipe (42), and the heated lubricating oil is more easily sucked by the composite vertical pipe (42); a filter screen (441) is arranged in the detection bin (44) for filtering impurities in the lubricating oil and judging the impurity content according to resistance, and the influence of viscosity on resistance is avoided for the heated lubricating oil; the outlet of the oil pump (45) is communicated with one end of a liquid injection pipe (46), the other end of the liquid injection pipe (46) is aligned with the top of the bevel gear, and the heated lubricating oil is sprayed on the bevel gear to improve the lubricating efficiency; a floating ring (43) is sleeved on the composite vertical pipe (42), the floating ring (43) is located in the region where the lubricating oil is heated, and the heated lubricating oil makes the floating ring (43) more easily float at the top; a heating device (422) is arranged at the top of the composite vertical pipe (42), the heating wire in the composite vertical pipe (42) is connected to a heating module in the heating device (422), and a distance sensor cooperating with the floating ring (43) is further arranged in the heating device (422); an inter-box detection device (5) is arranged at the position of the outer wall of the rotating connection of the two gear boxes (1), the inter-box detection device (5) comprises a friction plate (51) arranged on one of the gear boxes (1) and a composite detection unit (52) arranged on the other gear box (1), the friction plate (51) is a circular arc-shaped rubber pad attached to the circular outer wall of the gear box (1), and the composite detection unit (52) comprises a level, a pressure sensor and a rotary encoder, and the level is used for detecting the horizontal inclination state of the gear box (1); a rotating wheel (521) is arranged on the composite detection unit (52), the rotating wheel (521) is attached to the friction plate (51), and the rotating shaft of the rotating wheel (521) is fixed on the rotary encoder, the friction plate (51) drives the rotating wheel (521) to rotate when the gear boxes (1) rotate relative to each other, the rotating angle of the friction plate (51) is detected by the rotary encoder, and the rotating angle of the two gear boxes (1) is detected. ​ ​ ​ ​ ​ ​ ​ ​ The composite detection unit (52) is provided with an elastic top column (522) on the top, the top of the elastic top column (522) is attached to the bottom of the outer wall of the gear box (1) fixedly connected with the friction plate (51), a spring is arranged at the bottom of the elastic top column (522), and the bottom of the spring is attached to the pressure sensor, and the pressure sensor is used for detecting the shaking between the two gear boxes (1).

2. A universal traction gear case according to claim 1, characterized in that The oil detection device (4) is arranged at a corner position in the gear box (1), the oil detection device (4) comprises a warehouse wall (41), a partition plate (411) is arranged in the warehouse wall (41), the partition plate (411) divides the warehouse wall (41) into two parts, the composite vertical pipe (42) and the floating ring (43) are arranged in the lower half of the warehouse wall (41), the heating device (422), the detection warehouse (44) and the oil pump (45) are arranged in the upper half of the warehouse wall (41), the warehouse wall (41) is provided with a liquid passage (412) on the lower half, the liquid injection pipe (46) passes through the upper half of the warehouse wall (41), and the warehouse wall (41) wraps the floating ring (43) in the lower half, so that the floating ring (43) is prevented from being moved by the gear rotation and causing the floating ring (43) to damage the internal structure of the gear box (1), the lubricating oil is isolated from the upper half of the warehouse wall (41) by the partition plate (411), and the maintenance difficulty is reduced.

3. A universal traction gear case according to claim 2, wherein, The oil pump (45) is provided with a support pipe (47) on the top, a tee pipe is arranged at the connection position between the outlet of the oil pump (45) and the liquid injection pipe (46), the support pipe (47) is inserted into the last through hole located at the top except the oil pump (45) and the liquid injection pipe (46), and the support pipe (47) is connected with the lubricating oil inlet of the gear box (1) and plays the two roles of supplementing lubricating oil and supporting the oil pump (45).

4. A cardan drive gear box according to claim 3, characterized in that The filter screen (441) is provided with a spring on one side close to the oil pump (45), the other end of the spring abuts against the pressure sensor (443), the pressure sensor (443) is fixed on the top of the detection warehouse (44) or the bottom position of the oil pump (45) and the detection warehouse (44), and the pressure sensor (443) is used for detecting the upward pressure of the partition plate (411), so that the resistance of the lubricating oil passing through the filter screen (441) is analyzed.

5. A cardan drive gear box according to claim 4, characterized in that The detection warehouse (44) is further provided with a moisture sensor (442), and the moisture sensor (442) is used for detecting the water content in the heated lubricating oil.

6. A universal traction gear case according to claim 2, wherein, The gear box (1) is provided with a maintenance window (13) on the side wall corresponding to the upper half of the warehouse wall (41), the detection warehouse (44) or the filter screen (441) in the detection warehouse (44) or other components in the upper half of the warehouse wall (41) can be replaced by opening the maintenance window (13).

7. A universal traction gear case as claimed in claim 5, wherein, The oil pump (45) is a double-screw pump, comprising a driving screw and a driven screw which are engaged with each other and arranged in parallel in a pump shell. The active screw rod extends out of the pump shell and is connected with a driving motor, and the driving motor is electrically connected with a central control unit; the pump shell is respectively provided with a liquid inlet communicated with a detection bin (44) and a liquid outlet communicated with a liquid injection pipe (46); When the driven screw rod is reversely rotated by the active screw rod, the meshing space volume of the two screw rods gradually decreases along the axial direction, forming a continuous sealed chamber, and the lubricating oil in the detection bin (44) is sucked from the liquid inlet and pushed to the liquid outlet; The central control unit adjusts the rotating speed of the driving motor according to the filter resistance data detected by the pressure sensor (443) and the water content of the lubricating oil detected by the water sensor (442); the inner wall of the pump shell is coated with a wear-resistant coating, which is a tungsten carbide-based composite coating, used to reduce the friction between the screw rod and the inner wall of the pump shell and prolong the service life of the oil pump (45).

8. A universal traction gear case according to claim 7, wherein, An ultraviolet sterilization assembly is arranged in the detection bin (44) to kill and sterilize the microorganisms in the detection bin (44) and prevent the microorganisms from spreading and contaminating the lubricating oil in the gear box (1).

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