A power transmission device for a crane

Abstract

The application provides a crane power transmission device, relates to the technical field of cranes, and comprises a chassis, a rotating seat, an upper mounting seat, a compensation transmission device, a multi-stage transmission mechanism, a lower mounting seat, a cable transmission mechanism and an oil pump. The application has the characteristics of reasonable and simple structure, low production cost, convenient installation and complete functions. By arranging multiple transmission locking devices, the separate work or cooperative work of multiple oil pumps can be realized without additionally arranging multiple sets of driving sources or complex gear shifting mechanisms, the number of transmission components is reduced, the probability of failure is reduced, the installation process is simplified, and the manufacturing cost is saved. The application is provided with a transmission compensation mechanism. When the rotating seat rotates alone and no power is input, the transmission compensation mechanism can offset the acting force through reverse gear driving, avoids the misstart of the oil pump, prevents energy waste, and improves transmission accuracy. When power is input, the oil pump can be normally driven to work, effectively solving the problem of power transmission disorder when the rotating seat rotates.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cranes, in particular to a crane power transmission device. BACKGROUND

[0002] In the process of crane operation, the power transmission device is the core component to ensure the stable operation of various actuators, and its performance directly affects the operation efficiency, accuracy and reliability of the crane. The current crane power transmission devices on the market mostly adopt a single transmission path, which has many technical defects. On the one hand, the existing device is difficult to realize independent control and collaborative work of multiple oil pumps, often needs to set up multiple driving sources or complex gear shifting mechanisms, which not only increases the manufacturing cost and installation difficulty of the equipment, but also easily causes frequent failures due to too many transmission components. On the other hand, when the rotating seat of the crane rotates relative to the chassis, the traditional transmission device lacks an effective compensation mechanism, often causing power transmission disorder, such as mis-starting of the oil pump when the rotating seat rotates alone, causing energy waste and transmission accuracy decline, which cannot meet the accurate control requirements of power output in the operation process. At the same time, the cable transmission mechanism in the existing device is not reasonably designed, and in the process of continuous rotation of the rotating seat, the cable is easy to be wound and worn, which causes power transmission interruption or poor contact, affecting the stable operation of the electrical components of the crane. In addition, the transmission efficiency of the traditional power transmission device is low, and the power is greatly lost in the multi-stage transmission process, and the adaptability between components is poor, which is difficult to balance the compactness and integrity of the device, and cannot meet the efficient, stable and flexible operation requirements of modern cranes. SUMMARY

[0003] The purpose of the present application is to provide a crane power transmission device to solve the above problems, which solves the problems of the existing device that is difficult to realize independent and collaborative control of multiple oil pumps, mis-starting of the oil pump caused by power transmission disorder when the rotating seat rotates, easy winding and wearing of the cable transmission, low transmission efficiency, poor component adaptability and the inability to balance the compactness and integrity of the device.

[0004] In order to solve the above problems, the present application provides a technical scheme: a crane power transmission device, comprising a chassis and a rotating seat, the upper side of the chassis is movably connected with the rotating seat, further comprising an upper mounting seat, a compensation transmission device, a multi-stage transmission mechanism, a lower mounting seat, a cable transmission mechanism and an oil pump; the lower mounting seat is fixedly connected to the central interior of the chassis; the upper mounting seat is fixedly connected to the central interior of the rotating seat; the multi-stage transmission mechanism is arranged inside the lower mounting seat at the lower side, and is arranged inside the upper mounting seat at the upper side, the left side input end of the multi-stage transmission mechanism is connected with the output shaft of the transfer case on the left side of the chassis, and the cable transmission mechanism is arranged in the center of the multi-stage transmission mechanism; the lower side of the cable transmission mechanism is fixedly connected to the central interior of the lower mounting seat, and the upper side of the cable transmission mechanism is fixedly connected to the upper side center of the upper mounting seat; the compensation transmission device is a plurality of, and the plurality of compensation transmission devices are arranged outside the upper mounting seat respectively, the inner side input end of the plurality of compensation transmission devices is connected with the corresponding output end on the upper side of the multi-stage transmission mechanism, and the outer side output shaft of the plurality of compensation transmission devices is connected with the corresponding input end of the oil pump respectively.

[0005] As a preferred, the multi-stage transmission mechanism comprises a transmission shaft, a transmission gear one, a transmission gear two, a transmission sleeve, a transmission gear three, a transmission locking device and a transmission gear four; the transmission shaft is movably connected to the left side interior of the lower mounting seat at the right side exterior, the transmission shaft is fixedly connected with the transmission gear two at the right side end, and the left side of the transmission shaft is connected with the output shaft of the transfer case on the left side of the chassis; the transmission sleeve is a plurality of, the plurality of transmission sleeves are transmission sleeves of different sizes and movably connected between each other, the upper side end of the plurality of transmission sleeves is fixedly connected with the transmission gear three, and the lower side end of the plurality of transmission sleeves is the transmission gear four; the transmission gear two is movably connected to the upper side interior of the lower mounting seat, and the transmission gear two is connected with the transmission gear one; the transmission locking device is a plurality of, and the plurality of transmission locking devices are fixedly connected outside the lower mounting seat respectively, and the inner side of the plurality of transmission locking devices is connected with the transmission gear two and the corresponding transmission gear four.

[0006] As preferred, the transmission locking device comprises connecting gear one, connecting shaft one, connecting gear two, fixed housing, connecting sleeve, end face tooth part, movable seat, locking tooth disc, oil cylinder and spring; the fixed housing is fixedly connected outside the lower mounting seat, and the fixed housing is movably connected inside the connecting sleeve; the connecting sleeve is fixedly connected with the connecting gear two outside the left side, and the connecting gear two is connected with the transmission gear two; the end face tooth part is arranged on the right end face of the connecting sleeve; the connecting shaft one is movably connected inside the connecting sleeve; the connecting gear one is fixedly connected with the corresponding transmission gear four outside the left side of the connecting shaft one; the locking tooth disc is fixedly connected inside the right side edge of the fixed housing; the oil cylinder is fixedly connected inside the right side of the fixed housing; the movable seat is movably connected inside the fixed housing; the spline hole arranged in the center of the movable seat is connected with the external spline arranged on the right side of the connecting shaft one; the spring is arranged between the left side of the movable seat and the right side step surface of the connecting shaft one; the clamping tooth grooves matched with the end face tooth part and the locking tooth disc are arranged on the left and right end faces of the movable seat; and the right side central inside of the movable seat is movably connected with the T-shaped end part of the left side of the oil cylinder piston rod.

[0007] As preferred, the compensation transmission device comprises installation housing one, transmission compensation mechanism, driven gear one, driven gear two, inner gear and installation housing two; the installation housing one is fixedly connected outside the upper mounting seat, and the installation housing two is fixedly connected outside the installation housing one; the inner gear is fixedly connected inside the central part of the upper side of the chassis; the transmission compensation mechanism is arranged inside the installation housing one and the installation housing two; the driven gear one is fixedly connected on the inner side input end of the transmission compensation mechanism, and the driven gear one is connected with the corresponding output end of the upper side of the multi-stage transmission mechanism; the driven gear two is fixedly connected on the lower side input end of the transmission compensation mechanism, and the driven gear two is connected with the inner gear; and the outer side output end of the transmission compensation mechanism is connected with the input end of the oil pump.

[0008] As preferred, the transmission compensation mechanism comprises a connecting shaft two, a connecting gear three, a transmission sleeve, a connecting gear four, a rotating frame, a connecting gear five, a pinion, a compensation gear and a compensation shaft; the left outer part of the connecting shaft two is movably connected in the inside of the mounting shell one, the left end of the connecting shaft two is fixedly connected with a driven gear one, the right end of the connecting shaft two is fixedly connected with the connecting gear five, and the connecting gear five is movably connected in the inside of the mounting shell two; the transmission sleeve is movably connected outside the connecting shaft two, the left end of the transmission sleeve is fixedly connected with the connecting gear three, and the connecting gear three is movably connected in the inside of the mounting shell one, the right end of the transmission sleeve is fixedly connected with the connecting gear four, and the connecting gear four is movably connected in the inside of the mounting shell two; the upper outer part of the compensation shaft is movably connected in the lower inside of the mounting shell, the upper end of the compensation shaft is fixedly connected with the compensation gear, and the compensation gear is connected with the connecting gear three, and the lower end of the compensation shaft is fixedly connected with a driven gear two; the rotating frame is movably connected outside the inside of the mounting shell two, a plurality of pinions are movably connected inside the rotating frame, and the pinions are connected with the connecting gear four and the connecting gear five, and the right central shaft of the rotating frame is connected with the input end of the oil pump.

[0009] As preferred, the number of teeth of the connecting gear four is equal to the number of teeth of the connecting gear five.

[0010] As preferred, the cable transmission mechanism comprises a lower cable, a fixing sleeve, a conductive ring and an upper cable; the lower side of the fixing sleeve is fixedly connected outside the central inside of the lower mounting base, the upper side of the fixing sleeve is movably connected outside the central inside of the upper mounting base, and the top of the fixing sleeve is fixedly connected with the bottom of the conductive ring; the upper side of the conductive ring is fixedly connected with the top of the upper mounting base, the lower side of the conductive ring is electrically connected with the upper side of the lower cable, and the upper side of the conductive ring is electrically connected with one side of the upper cable.

[0011] As preferred, the lower side of the fixing sleeve is in T shape.

[0012] The present application has the advantages that: (1) the present application has the characteristics of reasonable and simple structure, low production cost, convenient installation and complete functions, a plurality of transmission locking devices are arranged, without the need for additional driving sources or complex gear shifting mechanisms, the separate work or cooperative work of a plurality of oil pumps can be realized, the number of transmission components is reduced, the failure probability is reduced, the installation process is simplified, and the manufacturing cost is saved.

[0013] (2) the present application is equipped with a transmission compensation mechanism, when the rotating seat rotates alone and without power input, the transmission compensation mechanism can offset the force through reverse gear driving, avoid oil pump misstart, prevent energy waste, and improve transmission accuracy; when there is power input, the oil pump can be normally driven to work, effectively solving the problem of power transmission disorder when the rotating seat rotates.

[0014] (3) The cable transmission mechanism of the application adopts the structure of T-shaped fixing sleeve cooperating with the conductive ring, in the rotating process of the rotating seat relative to the base, the fixing sleeve remains fixed, the conductive ring rotates synchronously with the rotating seat, the winding and wear of the cable are avoided, the continuous and stable transmission of power is ensured, and the normal operation of the electrical components of the crane is ensured.

[0015] (4) The application optimizes the power transmission path through the cooperative matching of the multi-stage transmission mechanism and the compensation transmission device, reduces the loss of power in the multi-stage transmission process, improves the transmission efficiency, and at the same time, the adaptability of each transmission component is strong, the compactness of the structure of the device is ensured under the premise of realizing various functions, and the efficient, stable and flexible operation requirements of the modern crane are met. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural schematic view of the application.

[0017] Figure 2 is a sectional view of Figure 1 .

[0018] Figure 3 is a structural schematic view of the multi-stage transmission mechanism.

[0019] Figure 4 is a structural schematic view of the transmission locking device.

[0020] Figure 5 is a structural schematic view of the compensation transmission device.

[0021] Figure 6 is a structural schematic view of the transmission compensation mechanism.

[0022] Figure 7 is a structural schematic view of the cable transmission mechanism.

[0023] 1 - base; 2 - rotating seat; 3 - upper mounting seat; 4 - compensation transmission device; 5 - multi-stage transmission mechanism; 6 - lower mounting seat; 7 - cable transmission mechanism; 8 - oil pump; 51 - transmission shaft; 52 - transmission gear one; 53 - transmission gear two; 54 - transmission sleeve; 55 - transmission gear three; 56 - transmission locking device; 57 - transmission gear four; 561 - connecting gear one; 562 - connecting shaft one; 563 - connecting gear two; 564 - fixed housing; 565 - connecting sleeve; 566 - end face tooth part; 567 - movable seat; 568 - locking tooth disc; 569 - oil cylinder; 5610 - spring; 41 - mounting housing one; 42 - transmission compensation mechanism; 43 - driven gear one; 44 - driven gear two; 45 - inner gear; 46 - mounting housing two; 421 - connecting shaft two; 422 - connecting gear three; 423 - transmission sleeve; 424 - connecting gear four; 425 - rotating frame; 426 - connecting gear five; 427 - pinion; 428 - compensation gear; 429 - compensation shaft; 71 - lower cable; 72 - fixed sleeve; 73 - conductive ring; 74 - upper cable. DETAILED DESCRIPTION

[0024] As Figure 1 And Figure 2As shown, the specific embodiment adopts the following technical scheme: a crane power transmission device, comprising a chassis 1 as a device base bearing component and a rotating seat 2 rotatable relative to the chassis 1 to adjust the working direction, the upper side of the chassis 1 is movably connected with the rotating seat 2 through a bearing structure, and the two cooperate to realize the fixing and rotating functions of the device; the device further comprises an upper mounting seat 3 for mounting the upper transmission component, a compensation transmission device 4 for realizing power compensation adjustment, a multi-stage transmission mechanism 5 for completing power multi-stage transmission and distribution, a lower mounting seat 6 for bearing the lower transmission assembly, a cable transmission mechanism 7 for ensuring stable power transmission, and an oil pump 8 for providing hydraulic power for the actuator; the lower mounting seat 6 is fixedly connected to the central interior of the chassis 1 by bolt fastening, and the lower mounting seat 6 has an installation cavity adapted to the multi-stage transmission mechanism 5 reserved inside; the upper mounting seat 3 is fixedly connected to the central interior of the rotating seat 2 by welding and rotates synchronously with the rotating seat 2; the lower side of the multi-stage transmission mechanism 5 is fitted and installed in the cavity inside the lower mounting seat 6, and the upper side extends and is arranged in the corresponding installation space inside the upper mounting seat 3, the left lower side input end is connected with the transfer case output shaft on the left side of the chassis 1 through a shaft coupling, to ensure stable power input, and the multi-stage transmission mechanism 5 has a central reserved passage, the cable transmission mechanism 7 is arranged in the passage, to realize compact layout of the transmission and power transmission components; the lower side of the cable transmission mechanism 7 is fixedly connected to the central interior of the lower mounting seat 6 through a flange on the outside, and the upper side is fixedly connected to the upper side center of the upper mounting seat 3 through a bolt, to rotate synchronously with the rotating seat 2; the compensation transmission device 4 is a plurality of devices, which are evenly distributed circumferentially along the upper mounting seat 3, the plurality of compensation transmission devices 4 are respectively arranged on the mounting positions on the outer periphery of the upper mounting seat 3 through bolt fixation, the inner side input end is connected with the corresponding output end on the upper side of the multi-stage transmission mechanism 5 through gear meshing, and the outer side output shaft is connected with the corresponding input end of the oil pump 8 through a key, to realize accurate power transmission to each oil pump 8.

[0025] As Figure 3As shown, the multi-stage transmission mechanism 5 includes a power transmission shaft 51, a transmission gear one 52 and a transmission gear two 53 for power steering, a transmission sleeve 54 for sleeve transmission, a transmission gear three 55 for power transmission to the upper part, a transmission locking device 56 for controlling power on-off, and a transmission gear four 57 for connecting the lower transmission; the right outer part of the power transmission shaft 51 is movably connected in the bearing hole in the left inner part of the lower mounting seat 6 through a rolling bearing, the right end part is fixedly connected with the transmission gear two 53 through a flat key, and the left end part is processed with a spline and matched with the spline hole of the output shaft of the differential case on the left side of the chassis 1 for guaranteeing efficient power transmission; the transmission sleeve 54 is several, adopts a stepped structure with different inner and outer diameters, is movably connected between each other through a sliding bearing, forms a nested transmission structure, and is fixedly connected with the transmission gear three 55 at the upper end part through welding and is fixedly connected with the transmission gear four 57 at the lower end part through a key, thereby ensuring synchronous power transmission; the transmission gear two 53 is movably connected in the mounting groove in the upper inner part of the lower mounting seat 6 through a bearing, the gear teeth are meshingly connected with the gear teeth of the transmission gear one 52, and power direction conversion is realized; the transmission locking device 56 is several and corresponds to the transmission sleeve 54 one by one, is fixedly connected on the bosses on the outer part of the lower mounting seat 6 through bolts respectively, is connected with the transmission gear two 53 and the corresponding transmission gear four 57 through gear meshing on the inner side respectively, and realizes power control on a single transmission sleeve 54.

[0026] As Figure 4As shown, the transmission locking device 56 comprises a connecting gear one 561 connected with the transmission gear four 57, a connecting shaft one 562 for power transmission, a connecting gear two 563 engaging with the transmission gear two 53, a fixed housing 564 providing a mounting base, a connecting sleeve 565 for transition transmission, an end face tooth portion 566 for gear transmission, a movable seat 567 for clutch control, a locking gear plate 568 for locking shaft body, a cylinder 569 for providing driving force, and a spring 5610 for resetting; the fixed housing 564 is fixedly connected outside the lower mounting seat 6 by bolts, has a stepped hole processed inside, and movably connects with the connecting sleeve 565; the connecting sleeve 565 has the connecting gear two 563 fixedly connected outside the left side by keys, the gear teeth engage with the transmission gear two 53, the right side end face has the annular distributed end face tooth portion 566 processed, and the central inside movably connects with the connecting shaft one 562 by a sliding bearing; the connecting shaft one 562 has the connecting gear one 561 fixedly connected outside the left side by a flat key, the gear teeth engage with the corresponding transmission gear four 57, and the right side has an external spline processed; the locking gear plate 568 is fixedly connected on the step of the right side edge inside the fixed housing 564 by screws, and has a gear groove processed on the end face matching with the movable seat 567; the cylinder 569 has a T-shaped end part processed on the piston rod, and is fixedly connected in the mounting hole of the right side central inside the fixed housing 564 by a flange outside the cylinder body; the movable seat 567 is movably connected in the stepped hole inside the fixed housing 564, has a spline hole processed in the center matching with the external spline of the connecting shaft one 562, has the spring 5610 sleeved between the left side and the right side step face of the connecting shaft one 562, has the clamping groove processed on the left and right side end faces matching with the end face tooth portion 566 and the locking gear plate 568 respectively, has a T-shaped groove processed in the right side central inside, and is movably connected with the left side T-shaped end part of the piston rod of the cylinder 569 through clearance fit, so as to realize the axial movement control of the movable seat 567.

[0027] As Figure 5As shown, the compensation transmission 4 comprises a mounting housing one 41 for mounting the inner side components, a transmission compensation mechanism 42 for realizing power compensation, a driven gear one 43 for receiving upper power, a driven gear two 44 for engaging the inner gear, an inner gear 45 fixedly mounted, and a mounting housing two 46 for mounting the outer side components; the mounting housing one 41 is externally bolted and fixedly connected in the groove inside the upper mounting seat 3, and the outer side is fixedly connected with the mounting housing two 46 through a flange, and the two are spliced to form a closed mounting cavity; the outer side of the inner gear 45 is bolted and fixedly connected on the annular boss inside the upper side of the chassis 1, and remains relatively fixed with the chassis 1; the transmission compensation mechanism 42 is integrally arranged in the mounting cavity formed by the splicing of the mounting housing one 41 and the mounting housing two 46, the inner side input end is fixedly connected with the driven gear one 43 through a key, the teeth of which engage with the transmission gear three 55 on the upper side of the multi-stage transmission mechanism 5, the lower side input end is fixedly connected with the driven gear two 44 through a flat key, the teeth of which engage with the inner gear 45, and the outer side output end is connected with the input end of the oil pump 8 through a shaft coupling, so as to realize power transmission and compensation adjustment.

[0028] As Figure 6As shown, the transmission compensation mechanism 42 includes a power transmission connecting shaft two 421, a connecting gear three 422 engaging the compensation gear, a transmission sleeve 423, a connecting gear four 424 cooperating with the transmission, a rotating frame 425 driving the oil pump to rotate, a connecting gear five 426 transmitting input power, a pinion 427 achieving power reversing, a compensation gear 428 transmitting rotary compensation power, and a compensation shaft 429 connecting the driven gear two; the left outer part of the connecting shaft two 421 is movably connected in the bearing seat inside the mounting housing one 41 through a bearing, the left end is fixedly connected with the driven gear one 43 through a key, and the right end is fixedly connected with the connecting gear five 426 through welding, and the connecting gear five 426 is movably connected in the central hole inside the mounting housing two 46 through a bearing; the transmission sleeve 423 is movably connected outside the connecting shaft two 421 through a sliding bearing, can rotate relative to the connecting shaft two 421, the left end is fixedly connected with the connecting gear three 422 through a flat key, and the connecting gear three 422 is movably connected on the mounting site inside the mounting housing one 41 through a bearing, the right end is fixedly connected with the connecting gear four 424 through a key, and the connecting gear four 424 is movably connected in the annular groove inside the mounting housing two 46 through a bearing; the upper outer part of the compensation shaft 429 is movably connected in the through hole inside the lower part of the mounting housing one 41 through a bearing, the upper end is fixedly connected with the compensation gear 428 through welding, the teeth of which engage with the connecting gear three 422, and the lower end is fixedly connected with the driven gear two 44 through a key; the rotating frame 425 has an annular structure, is movably connected inside the mounting housing two 46 through a rolling bearing on the inner side step, and uniformly has a plurality of mounting shafts on the inner side, each of which is movably connected with the pinion 427 through a bearing, the teeth of the pinion 427 engage with the teeth of the connecting gear four 424 and the connecting gear five 426 at the same time, forming a planetary gear transmission structure, and the right central shaft of the rotating frame 425 is connected with the input end of the oil pump 8 through a key, achieving power output.

[0029] Among them, the number of teeth of the connecting gear four 424 is equal to the number of teeth of the connecting gear five 426, which ensures that the power is offset during rotary compensation, avoiding the oil pump from being started by mistake.

[0030] As Figure 7As shown, the cable transmission mechanism 7 includes a lower cable 71 for accessing external power, a fixed sleeve 72 for providing fixed support, a conductive ring 73 for realizing rotating conduction, and an upper cable 74 for supplying power to the upper part; the lower side of the fixed sleeve 72 is in T shape, increasing the contact area with the lower mounting seat, the lower side is fixedly connected in the mounting hole in the central inner side of the lower mounting seat 6 through the flange, the upper side is movably connected in the through hole in the central inner side of the upper mounting seat 3 through the bearing, and the top is fixedly connected with the bottom of the conductive ring 73 through the screw; the conductive ring 73 adopts a multi-ring structure, the upper side is fixedly connected at the top of the upper mounting seat 3 through the bolt, rotates synchronously with the upper mounting seat 3, the lower side is electrically connected with the upper side of the lower cable 71 through the carbon brush, and the upper side is electrically connected with one side of the upper cable 74 through the carbon brush, realizing continuous conduction in the rotating state.

[0031] Among them, the lower side of the fixed sleeve 72 is in T shape, enhancing the structural stability and avoiding deviation in the rotating process.

[0032] The application has the advantages that the application has reasonable and simple structure, low production cost, convenient installation, complete functions, and the like. When the crane starts operation, the output shaft of the transfer case on the left side of the chassis 1 starts to operate as the power input source of the entire power transmission device, and outputs power to the subsequent transmission components. The output shaft of the transfer case is connected with the left end of the transmission shaft 51 to drive the transmission shaft 51 to rotate synchronously. The transmission gear two 53 on the right end of the transmission shaft 51 rotates with the transmission shaft 51, and meshes with the transmission gear one 52 in the upper side of the lower mounting seat 6 to transmit power to the transmission gear one 52 to complete the initial link of power transmission. The transmission sleeves 54 are multiple and have different sizes, and are in the active connection state between the inside and the outside. The lower end of each transmission sleeve 54 is fixed with the transmission gear four 57, and the upper end of each transmission sleeve 54 is fixed with the transmission gear three 55. After the transmission gear one 52 receives power, the transmission sleeve 54 is driven to rotate through cooperation with the corresponding transmission gear four 57 (power transmission is realized after the transmission locking device 56 is started), and the transmission sleeve 54 drives the transmission gear three 55 and the transmission gear four 57 at the upper end and the lower end to rotate synchronously to realize power transmission and conversion in the up-down direction, and power is transmitted to the upper side compensation transmission device 4 and the lower side transmission control component. When a specific oil pump 8 needs to work, the transmission locking device 56 at the corresponding position is started. The piston rod of the oil cylinder 569 extends to the left, pushes the movable seat 567 to move to the left against the elastic force of the spring 5610, the tooth groove on the left end surface of the movable seat 567 meshes with the end surface tooth part 566 on the right end surface of the connecting sleeve 565, the connecting gear two 563 fixed on the left outer side of the connecting sleeve 565 meshes with the transmission gear two 53, power of the transmission gear two 53 is transmitted to the connecting sleeve 565 through the connecting gear two 563, and then is transmitted to the connecting shaft one 562 through the meshed movable seat 567. The connecting gear one 561 fixed on the left outer side of the connecting shaft one 562 meshes with the transmission gear four 57 below the corresponding transmission sleeve 54, and then power is transmitted to the transmission sleeve 54 to realize power access of the specific transmission sleeve 54. When the corresponding oil pump 8 does not need to work, the piston rod of the oil cylinder 569 is retracted, the spring 5610 pushes the movable seat 567 to move to the right, the left side of the movable seat 567 is disengaged from the meshing with the end surface tooth part 566, the right side of the movable seat 567 meshes with the locking tooth disc 568 on the right side edge in the inner side of the fixed shell 564 to lock the connecting shaft one 562 and cut off the power transmission between the transmission gear two 53 and the corresponding transmission gear four 57 to realize the disconnection control of single-way power. Through the independent control of the multiple transmission locking devices 56, the individual work or cooperative work of the multiple oil pumps 8 can be realized. The installation shell one 41 is fixed on the outer side of the inner side of the upper mounting seat 3, the installation shell two 46 is fixed on the outer side of the installation shell one 41, and the installation shell two 46 constitutes the installation carrier of the compensation transmission device 4.The transmission compensation mechanism 42 is arranged inside the mounting shell one 41 and the mounting shell two 46, the left end of the input end of the inner side of the connecting shaft two 421 is fixed with the driven gear one 43, the driven gear one 43 is engaged with the transmission gear three 55 on the upper side of the multi-stage transmission mechanism 5, receives the power transmitted by the transmission gear three 55, drives the connecting shaft two 421 to rotate, the connecting gear five 426 fixed on the right side end of the connecting shaft two 421 rotates with the connecting shaft two 421, the connecting gear five 426 is engaged with a plurality of pinions 427 in the inner side of the rotating frame 425, drives the pinions 427 to rotate; the pinions 427 are engaged with the connecting gear four 424 on the right side end of the transmission sleeve 423 at the same time, the transmission sleeve 423 is movably connected outside the connecting shaft two 421, the inner gear 45 is fixed outside the central inside of the bottom disc 1, the lower side end of the compensation shaft 429 of the lower side input end of the transmission compensation mechanism 42 is fixed with the driven gear two 44, the driven gear two 44 is engaged with the inner gear 45; the compensation gear 428 fixed on the upper side end of the compensation shaft 429 is engaged with the connecting gear three 422 on the left side end of the transmission sleeve 423, when the rotating seat 2 drives the upper mounting seat 3 to rotate, the driven gear two 44 rolls along the inner gear 45 and rotates by itself, drives the compensation gear 428 to rotate through the compensation shaft 429, and then drives the connecting gear three 422 and the transmission sleeve 423 to rotate, because the number of teeth of the connecting gear four 424 is equal to the number of teeth of the connecting gear five 426, when only the rotating seat 2 rotates (without power input of the transfer case), the direction of rotation of the driven gear two 44 driving the transmission sleeve 423 and the connecting gear four 424 is opposite to the direction of rotation of the connecting shaft two 421 driving the connecting gear five 426, and the rotating speeds of the two are the same; the pinions 427 only rotate by themselves without driving the rotating frame 425 to rotate under the reverse driving of the connecting gear four 424 and the connecting gear five 426, so that the oil pump 8 (connected with the right central shaft of the rotating frame 425) remains stationary, avoiding the oil pump 8 from being started by mistake when there is no power input, and ensuring the transmission accuracy, when the transfer case inputs power, the driving force of the connecting gear five 426 is greater than the reverse driving force of the connecting gear four 424, driving the pinions 427 and the rotating frame 425 to rotate synchronously, driving the oil pump 8 to work normally, in the cable transmission mechanism 7, the lower side of the fixed sleeve 72 is T-shaped, the lower side outside thereof is fixed in the central inside of the lower side of the lower mounting seat 6, and the upper side outside thereof is movably connected in the central inside of the upper mounting seat 3; the fixed sleeve 72 is fixedly connected with the bottom of the conductive ring 73, the upper side of the conductive ring 73 is fixed on the top of the upper mounting seat 3; the lower cable 71 is electrically connected with the lower side of the conductive ring 73, and one side of the upper cable 74 is electrically connected with the upper side of the conductive ring 73, here the power is transmitted to the conductive ring 73 through the lower cable 71, the conductive ring 73 transmits the power to the upper cable 74, and the upper cable 74 provides power for the electrical components (such as control elements and sensors) on the rotating seat 2; when the rotating seat 2 rotates relative to the bottom disc 1, the fixed sleeve 72 remains fixed, the conductive ring 73 rotates synchronously with the upper mounting seat 3, realizes continuous and stable transmission of power in the rotating state, and is not affected by the relative rotation of the components.

[0033] In the description of the present application, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "central", "both ends" 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 convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements 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.

[0034] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "setting", "connecting", "fixing", "screw connection" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited, the above-mentioned terms in the present application can be understood according to the specific meaning in the present application by the person skilled in the art according to the specific situation.

[0035] The basic principles and main features of the present application and the advantages of the present application are shown and described above, and those skilled in the art should understand that the present application is not limited by the above-mentioned embodiments, the above-mentioned embodiments and the description in the specification are only to illustrate the principles of the present application, and various changes and improvements can be made to the present application without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the present application, the scope of protection of the present application is defined by the appended claims and their equivalents.

[0036] The control mode of the present application is controlled by manually starting and closing the switch, and the wiring diagram of the power element and the provision of the power supply are well known in the art, and the present application is mainly used to protect mechanical devices, so the control mode and wiring arrangement of the present application will not be explained in detail.

Claims

1. A power transmission device of a crane, comprising a chassis (1) and a rotating seat (2), the rotating seat (2) being movably connected to the upper side of the chassis (1), characterized in that: It also includes the upper mounting seat (3), compensation transmission device (4), multi-stage transmission mechanism (5), lower mounting seat (6), cable transmission mechanism (7) and oil pump (8); The lower mounting seat (6) is fixedly connected to the central interior of the chassis (1); The upper mounting seat (3) is fixedly connected to the central interior of the rotating seat (2); The lower side of the multi-stage transmission mechanism (5) is arranged inside the lower mounting seat (6), the upper side of the multi-stage transmission mechanism (5) is arranged inside the upper mounting seat (3), the left lower side input end of the multi-stage transmission mechanism (5) is connected with the output shaft of the transfer case on the left side of the chassis (1), and the central part of the multi-stage transmission mechanism (5) is provided with the cable transmission mechanism (7); The lower side of the cable transmission mechanism (7) is fixedly connected to the central interior of the lower mounting seat (6), and the upper side of the cable transmission mechanism (7) is fixedly connected to the upper side of the central part of the upper mounting seat (3); The compensation transmission device (4) is a plurality of compensation transmission devices (4), and the plurality of compensation transmission devices (4) are arranged outside the upper mounting seat (3) respectively, the inner side input end of the plurality of compensation transmission devices (4) is connected with the corresponding output end on the upper side of the multi-stage transmission mechanism (5), and the outer side output shaft of the plurality of compensation transmission devices (4) is connected with the corresponding input end of the oil pump (8) respectively; The multi-stage transmission mechanism (5) comprises a transmission shaft (51), a transmission gear one (52), a transmission gear two (53), a transmission sleeve (54), a transmission gear three (55), a transmission locking device (56) and a transmission gear four (57); The right side of the transmission shaft (51) is movably connected to the left side of the lower mounting seat (6), the right side end of the transmission shaft (51) is fixedly connected with the transmission gear two (53), and the left side of the transmission shaft (51) is connected with the output shaft of the transfer case on the left side of the chassis (1); The transmission sleeve (54) is a plurality of transmission sleeves of different sizes and is movably connected between each other, the upper side end of each of the plurality of transmission sleeves (54) is fixedly connected with the transmission gear three (55), and the lower side end of each of the plurality of transmission sleeves (54) is the transmission gear four (57); The transmission gear two (53) is movably connected to the upper side of the lower mounting seat (6), and the transmission gear two (53) is connected with the transmission gear one (52); The transmission locking device (56) is a plurality of transmission locking devices (56), and the plurality of transmission locking devices (56) are fixedly connected outside the lower mounting seat (6) respectively, and the inner side of the plurality of transmission locking devices (56) is connected with the transmission gear two (53) and the corresponding transmission gear four (57); The compensation transmission device (4) comprises an installation shell one (41), a transmission compensation mechanism (42), a driven gear one (43), a driven gear two (44), an internal gear (45) and an installation shell two (46); The installation shell one (41) is fixedly connected outside the upper mounting seat (3), and the installation shell two (46) is fixedly connected to the outside of the installation shell one (41); The internal gear (45) is fixedly connected to the central interior of the upper side of the chassis (1); The transmission compensation mechanism (42) is arranged inside the mounting shell one (41) and the mounting shell two (46), a driven gear one (43) is fixedly connected to the inner side input end of the transmission compensation mechanism (42), the driven gear one (43) is connected with the corresponding transmission gear three (55) on the upper side of the multi-stage transmission mechanism (5), a driven gear two (44) is fixedly connected to the lower side input end of the transmission compensation mechanism (42), the driven gear two (44) is connected with the internal gear (45), and the outer side output end of the transmission compensation mechanism (42) is connected with the input end of the oil pump (8).

2. Crane power transmission arrangement according to claim 1, characterized in that: The transmission locking device (56) comprises a connecting gear one (561), a connecting shaft one (562), a connecting gear two (563), a fixed shell (564), a connecting sleeve (565), an end face tooth part (566), a movable seat (567), a locking tooth disc (568), an oil cylinder (569) and a spring (5610); The fixed shell (564) is fixedly connected outside the lower mounting seat (6), and the connecting sleeve (565) is movably connected inside the fixed shell (564); The connecting sleeve (565) is fixedly connected with the connecting gear two (563) outside the left side, and the connecting gear two (563) is connected with the transmission gear two (53); the end face tooth part (566) is arranged on the right side end face of the connecting sleeve (565); and the connecting shaft one (562) is movably connected inside the central part of the connecting sleeve (565). The connecting shaft one (562) is fixedly connected with the connecting gear one (561) outside the left side, and the connecting gear one (561) is connected with the corresponding transmission gear four (57); The locking tooth disc (568) is fixedly connected to the right side edge inside the fixed shell (564); The oil cylinder (569) is fixedly connected outside the right side central part inside the fixed shell (564); The movable seat (567) is movably connected inside the fixed shell (564), the spline hole arranged in the central part of the movable seat (567) is connected with the outer spline arranged on the right side of the connecting shaft one (562), the spring (5610) is arranged between the left side of the movable seat (567) and the stepped surface of the right side of the connecting shaft one (562), the clamping tooth grooves matched with the end face tooth part (566) and the locking tooth disc (568) are respectively arranged on the left and right side end faces of the movable seat (567), and the left side T-shaped end part of the piston rod of the oil cylinder (569) is movably connected with the right side central part inside the movable seat (567).

3. Crane power transmission arrangement according to claim 1, characterized in that: The transmission compensation mechanism (42) comprises a connecting shaft two (421), a connecting gear three (422), a transmission sleeve (423), a connecting gear four (424), a rotating frame (425), a connecting gear five (426), a pinion (427), a compensation gear (428) and a compensation shaft (429). The left outer part of the connecting shaft two (421) is movably connected inside the mounting shell one (41), the left end of the connecting shaft two (421) is fixedly connected with the driven gear one (43), the right end of the connecting shaft two (421) is fixedly connected with the connecting gear five (426), and the connecting gear five (426) is movably connected inside the mounting shell two (46); The transmission sleeve (423) is movably connected outside the connecting shaft two (421), the left end of the transmission sleeve (423) is fixedly connected with the connecting gear three (422), and the connecting gear three (422) is movably connected inside the mounting shell one (41), the right end of the transmission sleeve (423) is fixedly connected with the connecting gear four (424), and the connecting gear four (424) is movably connected inside the mounting shell two (46); The upper outer part of the compensation shaft (429) is movably connected inside the lower part of the mounting shell one (41), the upper end of the compensation shaft (429) is fixedly connected with the compensation gear (428), and the compensation gear (428) is connected with the connecting gear three (422), and the lower end of the compensation shaft (429) is fixedly connected with the driven gear two (44); The outer part of the rotating frame (425) is movably connected inside the mounting shell two (46), the inner side of the rotating frame (425) is movably connected with a plurality of pinions (427), and the pinions (427) are connected with the connecting gear four (424) and the connecting gear five (426), and the right central shaft of the rotating frame (425) is connected with the input end of the oil pump (8).

4. Crane power transmission arrangement according to claim 3, characterized in that: The number of teeth of the connecting gear four (424) is equal to the number of teeth of the connecting gear five (426).

5. Crane power transmission arrangement according to claim 1, characterized in that: The cable transmission mechanism (7) comprises a lower cable (71), a fixed sleeve (72), a conductive ring (73) and an upper cable (74); The lower outer part of the fixed sleeve (72) is fixedly connected with the central inner part of the lower mounting seat (6), the upper outer part of the fixed sleeve (72) is movably connected with the central inner part of the upper mounting seat (3), and the top of the fixed sleeve (72) is fixedly connected with the bottom of the conductive ring (73); The upper side of the conductive ring (73) is fixedly connected with the top of the upper mounting seat (3), the lower side of the conductive ring (73) is electrically connected with the upper side of the lower cable (71), and the upper side of the conductive ring (73) is electrically connected with one side of the upper cable (74).

6. Crane power transmission arrangement according to claim 5, characterized in that: The lower side of the fixed sleeve (72) is T-shaped.

Images