CN115013483B - Transmission system for automatic gearbox of crawler-type vehicle - Google Patents
Transmission system for automatic gearbox of crawler-type vehicle Download PDFInfo
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- CN115013483B CN115013483B CN202210614665.6A CN202210614665A CN115013483B CN 115013483 B CN115013483 B CN 115013483B CN 202210614665 A CN202210614665 A CN 202210614665A CN 115013483 B CN115013483 B CN 115013483B
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- driving
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
- F16H1/20—Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members
- F16H1/22—Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
- F16H1/222—Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with non-parallel axes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D11/00—Steering non-deflectable wheels; Steering endless tracks or the like
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D11/00—Steering non-deflectable wheels; Steering endless tracks or the like
- B62D11/001—Steering non-deflectable wheels; Steering endless tracks or the like control systems
- B62D11/005—Hydraulic control systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/048—Type of gearings to be lubricated, cooled or heated
- F16H57/0482—Gearings with gears having orbital motion
Abstract
The invention discloses a transmission system for an automatic gearbox of a crawler-type vehicle, which comprises a gearbox transmission case, wherein the gearbox is connected with the transmission case through bolts and connecting flanges, a working space is arranged in the transmission case, a driving shaft is rotatably arranged on the inner wall of one side of the working space, the driving shaft penetrates through the transmission case, one end of the driving shaft, which is positioned outside the transmission case, is connected with an output shaft of the gearbox, a transmission case device for converting the power direction of a transmission main shaft by 90 degrees in a T-shaped manner is arranged, the power generated by an engine and the automatic gearbox is input to a main spiral bevel gear of the transmission case, the power output by the automatic gearbox is converted by 90 degrees in a T-shaped manner through a driven bevel gear and the transmission main shaft in the transmission case, and then the driving operation control of automatic speed change, left and right steering and braking is carried out on the vehicle by matching with a hydraulic system.
Description
Technical Field
The invention belongs to the technical field of gearboxes, and particularly relates to a transmission system for an automatic gearbox of a tracked vehicle.
Background
At present, the automatic speed change control systems of several crawler-type rescue and relief vehicle manufacturers in the market are in a research and development stage.
The original crawler type emergency rescue vehicle speed changing system adopts a manual military T-shaped gearbox, a hydraulic system and a planetary hydraulic steering machine system, the transmission system of the gearbox is complex in design, a main clutch and the gearbox are arranged in a box body, and the inside of the box body is separated by a partition board; the driving part is rigidly connected with the flywheel of the engine, the driven part is in spline connection with the driving shaft of the gearbox, and the power from the engine to the gearbox is transmitted or cut off in a mode of combining and separating friction plates. The system is formed by combining a plurality of groups of gear sets, and when a vehicle is in forward running, the pedal clutch pedal is needed to cut off the power connection between the engine and the gearbox and then carry out manual gear shifting operation, so that a driver of the vehicle is difficult to operate and drive, and the driver with strong expertise is needed; the working strength of the driver is high, so that the driver is easy to fatigue and generate danger; the manufacturing cost is extremely high; the transmission efficiency is greatly reduced due to the transmission of multiple mechanical structures; the structural parts are numerous, the processing and manufacturing difficulty is high, and the time period for processing the parts is long.
Disclosure of Invention
In order to solve the above problems in the prior art, it is an object of the present invention to provide a transmission system for an automatic gearbox of a tracked vehicle.
The technical scheme adopted by the invention is as follows:
the transmission system for the automatic gearbox of the crawler-type vehicle comprises a gearbox and a transmission box, wherein the gearbox is connected with the transmission box through bolts and connecting flanges, a working space is arranged in the transmission box, a driving shaft is rotatably arranged on the inner wall of one side of the working space, the driving shaft penetrates through the transmission box, one end of the driving shaft, which is positioned outside the transmission box, is connected with an output shaft of the gearbox, one end of the driving shaft, which is positioned in the working space, is detachably provided with a transmission bevel gear, one side of the transmission bevel gear is meshed with a driving bevel gear, the driving bevel gear is fixedly arranged at one end of the driving shaft, the driving shaft is rotatably connected with the inner wall of one side of the working space, the driving shaft penetrates through the transmission box, and one end, which is far away from the driving bevel gear, of the driving shaft is positioned outside the transmission box; the driving shaft transmits power to the driving wheel through the steering gear, the coupling and the speed reducer in sequence.
In the technical scheme, the technical scheme is adopted to realize the automatic speed change control of the civil tracked vehicle by using a mature heavy truck automatic gearbox system, a transmission box system for carrying out T-shaped power conversion, a planetary hydraulic steering machine system and a control hydraulic system. The system designed by the novel technology improves the dynamic characteristic of the vehicle to the maximum extent, simplifies the operation and reduces the energy consumption. The production cost of the same-power gearbox is 4-5 times that of the invention, and the invention has great significance in automatic speed change operation of civil tracked vehicles.
The hydraulic system is used for braking a steering engine, the hydraulic system comprises an engine output duplex pump, one side of the engine output duplex pump is connected with a main constant pressure valve, the main constant pressure valve is respectively connected with and controls a steering valve, a right brake cylinder and a left brake cylinder, a radiator is arranged between the right brake cylinder and the left brake cylinder, the radiator is positioned on one side of the steering valve, one side of the engine output duplex pump is connected with a filter, and a cyclone filter is arranged between the main constant pressure valve and the engine output duplex pump.
In the technical scheme, the hydraulic system adopts the form of assembling oil pump output at the engine power take-off port, connecting a filter through a pipeline, a main distribution valve, a steering valve, a transmission box and a brake oil cylinder, and provides clean hydraulic energy with set pressure and flow for the transmission box, a planetary steering machine operating device and a hydraulic brake cylinder of a parking brake operating device for power direction conversion. The lubrication system provides lubrication to the friction surfaces of the gearbox and the planetary steering.
Preferably, an engine oil temperature regulating valve is arranged between the right brake cylinder and the main constant pressure valve, one end of the engine oil temperature regulating valve is communicated with the right brake cylinder, and the other end of the engine oil temperature regulating valve is communicated with the radiator.
Preferably, the steering device further comprises a foot brake device and a steering gear, wherein the foot brake device and the steering gear are positioned on one side of the coupler, the foot brake device controls the right brake cylinder and the left brake cylinder, and the steering gear controls a steering valve of the hydraulic system through a steering rod.
As the preferable mode of the invention, a transmission shaft is rotatably arranged on the inner wall of one side of the working space far away from the driving shaft, the transmission shaft penetrates through the transmission box, and one end of the transmission shaft positioned outside the transmission box is identical to one end of the driving shaft positioned outside the transmission box in structure; one end of the transmission shaft, which is positioned in the working space, is provided with a control mechanism for transmitting the power of the driving shaft to the transmission shaft.
As the preferable mode of the invention, the control mechanism comprises a telescopic shaft, the telescopic shaft is of a telescopic structure, the telescopic shaft is controlled to stretch by a hydraulic system, one end of the telescopic shaft is rotationally connected with the inner wall of one side of the working space, a transmission gear and a control gear are fixedly arranged on the telescopic shaft, a driving gear is meshed with one side of the transmission gear, the driving gear is fixedly arranged on a driving shaft, a reversing gear is arranged on one side of the control gear, the reversing gear is fixedly arranged on a driving shaft, an internal gear is arranged on one side of the reversing gear, and the internal gear is fixedly connected with the driving shaft.
In the technical scheme, the transmission box device for T-shaped conversion of the power direction of the transmission main shaft by 90 degrees; the rear end of the transmission case is assembled by meshing a gear ring with a power output main shaft of the automatic gearbox, power generated by the engine and the automatic gearbox is input to a main spiral bevel gear of the transmission case, the power output by the automatic gearbox is subjected to T-shaped conversion by a driven bevel gear and the transmission main shaft in the transmission case, and then the gear rings at the left end and the right end of the transmission case are connected with planetary gears and input main shafts of a left planetary steering gear system and a right planetary steering gear system in a meshing manner, so that the driving control of automatic speed change, left steering, right steering and braking of the vehicle is carried out by matching with a hydraulic system.
As a preferable mode of the invention, the control mechanism comprises a telescopic shaft, the telescopic shaft is rotatably arranged in a sleeve, an electric cylinder is arranged in the sleeve, and the electric cylinder controls the telescopic shaft to stretch and retract; the telescopic shaft is fixedly provided with a transmission gear and a control gear, one side of the transmission gear is meshed with a driving gear, the driving gear is fixedly arranged on a driving shaft, one side of the control gear is provided with a reversing gear, the reversing gear is fixedly arranged on a transmission shaft, one side of the reversing gear is provided with an internal tooth gear, and the internal tooth gear is fixedly connected with the transmission shaft; the hydraulic control device is characterized in that a limiting block is arranged on one side of the sleeve, the sleeve is rotationally connected with the limiting block, a control hydraulic cylinder is arranged on one side of the limiting block, the control hydraulic cylinder is fixedly connected with the inner wall of one side of the working space, a control piston is controlled by the control hydraulic cylinder, and the limiting block is fixedly connected with the control piston.
In the technical scheme, through the gear set which can be flexibly separated and meshed, not only can the radius steering of the vehicle be realized, but also the center steering of the vehicle can be realized, and the gear set separation and meshing process adopts a matching mode of radial movement and axial movement, so that the situation that the teeth of the gear are dead against or are worn greatly can be avoided.
Preferably, the internal gear has a ring gear structure, and the control gear is meshed with the reversing gear or the internal gear.
In the technical scheme, the internal tooth meshing structure can change the transmission speed, and the speed can be compensated through the speed reducer.
As the optimization of the invention, the mounting piece is fixedly arranged on the limiting block, the sliding rod is fixedly arranged on the mounting piece, the rack is arranged on the sliding rod in a sliding way, one side of the rack is meshed with the gear ring, the gear ring is fixedly connected with the sleeve, the mounting block is fixedly arranged on one side of the rack, the connecting block is arranged on one side of the control hydraulic cylinder, the transmission rod is arranged between the connecting block and the mounting block, and two ends of the transmission rod are respectively hinged with the connecting block and the mounting block.
In the technical scheme, the gears are radially moved, so that the gears are rotated by a small extent through the racks and the shaft sleeves, and accurate engagement between the gear sets which are engaged again after separation is further ensured.
Preferably, a one-way bearing is arranged at the joint of the sleeve and the telescopic shaft.
In the technical scheme, the telescopic shaft can not drive the sleeve in rotation under the conventional condition, and the telescopic shaft can be driven to rotate in a small amplitude by the rotation of the sleeve.
The beneficial effects of the invention are as follows: the invention is used as a transmission system for an automatic gearbox of a crawler vehicle, and a transmission box device which is provided with a high-efficiency double-spiral bevel gear and a transmission main shaft and is used for converting the power direction by 90 degrees in a T-shaped manner is designed and added; the rear end of the transmission case is assembled by meshing a gear ring with a power output main shaft of the automatic gearbox, power generated by the engine and the automatic gearbox is input to a main spiral bevel gear of the transmission case, the power output by the automatic gearbox is subjected to T-shaped conversion by a driven bevel gear and the transmission main shaft in the transmission case, and then the gear rings at the left end and the right end of the transmission case are connected with planetary gears and input main shafts of a left planetary steering gear system and a right planetary steering gear system in a meshing manner, so that the driving control of automatic speed change, left steering, right steering and braking of the vehicle is carried out by matching with a hydraulic system. The hydraulic system adopts the mode that an engine power take-off port is provided with an oil pump output, a pipeline is connected with a filter, a main distribution valve, a steering valve, a transmission case and a brake oil cylinder, and provides clean hydraulic energy with set pressure and flow for the transmission case, a planetary steering machine operating device and a hydraulic brake cylinder of a parking brake operating device for power direction conversion. The lubrication system provides lubrication to the friction surfaces of the gearbox and the planetary steering.
In the transmission case, the gear set which can be flexibly separated and meshed is designed, so that not only can the radius steering of the vehicle be realized, but also the center steering of the vehicle can be realized, and the gear set separation and meshing process adopts a matching mode of radial movement and axial movement, so that the situation that the teeth of the gear are dead against or are worn greatly can be avoided; and the gear moves radially, so that the gear is rotated by a small extent through the rack and the shaft sleeve, and the accurate engagement between the gear sets which are engaged again after being separated is further ensured.
Drawings
The invention will be described in further detail with reference to the accompanying drawings and detailed description.
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic illustration of the internal structure of the transmission case of FIG. 1 in accordance with the present invention;
FIG. 3 is a schematic diagram of the control mechanism of FIG. 2 according to the present invention;
FIG. 4 is an enlarged schematic view of the structure of FIG. 3A in accordance with the present invention;
fig. 5 is a schematic diagram of the hydraulic system of fig. 1 according to the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the particular embodiments described herein are illustrative only and are not intended to limit the invention, i.e., the embodiments described are merely some, but not all, of the embodiments of the invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present invention.
Specific embodiments of the present invention are described below in conjunction with figures 1-5,
in one embodiment of the invention, a transmission system for an automatic gearbox of a tracked vehicle comprises a gearbox 11 and a gearbox 13, wherein the gearbox 11 is connected with the gearbox 13 through bolts and connecting flanges 12, a working space 52 is arranged in the gearbox 13, a driving shaft 67 is rotatably arranged on one side inner wall of the working space 52 and penetrates through the gearbox 13, one end of the driving shaft 67 positioned outside the gearbox 13 is connected with an output shaft of the gearbox 11, one end of the driving shaft 67 positioned inside the working space 52 is detachably provided with a transmission bevel gear 66, one side of the transmission bevel gear 66 is meshed with a driving bevel gear 65, the driving bevel gear 65 is fixedly arranged at one end of a driving shaft 64, the driving shaft 64 is rotatably connected with one side inner wall of the working space 52, the driving shaft 64 penetrates through the gearbox 13, and one end of the driving shaft 64 away from the driving bevel gear 65 is positioned outside the gearbox 13; the driving shaft 64 transmits power to the driving wheel 19 through the steering gear 14, the coupling 15 and the speed reducer 16 in sequence; the drive shaft 64 and the propeller shaft 70 transmit power to the speed reducer 16, respectively: the planetary gears and the inner frame shafts of the left and right steering gears 14 are meshed with the left and right couplings 15, and the speed reducers 16 at the two ends transmit power to the driving wheels 19 on the driving wheels at the two ends, and the driving wheels start to rotate.
The hydraulic system 20 is used for braking the steering engine 14, the hydraulic system 20 comprises an engine output double pump 22, one side of the engine output double pump 22 is connected with a main constant pressure valve 24, the main constant pressure valve 24 is respectively connected with and controls a steering valve 26, a right brake cylinder 27 and a left brake cylinder 28, a radiator 29 is arranged between the right brake cylinder 27 and the left brake cylinder 28, the radiator 29 is positioned on one side of the steering valve 26, one side of the engine output double pump 22 is connected with a filter 30, and a cyclone filter 23 is arranged between the main constant pressure valve 24 and the engine output double pump 22; an engine oil temperature regulating valve 25 is arranged between the right brake cylinder 27 and the main constant pressure valve 24, one end of the engine oil temperature regulating valve 25 is communicated with the right brake cylinder 27, and the other end of the engine oil temperature regulating valve 25 is communicated with the radiator 29; the steering system further comprises a foot brake device 17 and a steering gear 18, wherein the foot brake device 17 and the steering gear 18 are positioned on one side of the coupler 15, the foot brake device 17 controls the right brake cylinder 27 and the left brake cylinder 28, and the steering gear 18 controls the steering valve 26 of the hydraulic system 20 through a steering rod. The hydraulic system adopts the mode that an engine power take-off port is provided with an oil pump output, a pipeline is connected with a filter, a main distribution valve, a steering valve, a transmission case and a brake oil cylinder, and provides clean hydraulic energy with set pressure and flow for the transmission case, a planetary steering machine operating device and a hydraulic brake cylinder of a parking brake operating device for power direction conversion. The lubrication system provides lubrication to the friction surfaces of the gearbox and the planetary steering.
In another embodiment of the present invention, a transmission shaft 70 is rotatably disposed on an inner wall of one side of the working space 52 away from the driving shaft 64, the transmission shaft 70 penetrates through the transmission case 13, and one end of the transmission shaft 70 located outside the transmission case 13 is identical to one end of the driving shaft 64 located outside the transmission case 13; the end of the drive shaft 70 within the workspace 52 has a control mechanism to transfer the power of the drive shaft 64 to the drive shaft 70.
Advantageously, the control mechanism comprises a telescopic shaft 53, the telescopic shaft 53 is of a telescopic structure, the telescopic shaft 53 is controlled to stretch by a hydraulic system, one end of the telescopic shaft 53 is rotatably connected with the inner wall of one side of the working space 52, a transmission gear 62 and a control gear 71 are fixedly arranged on the telescopic shaft 53, a driving gear 63 is meshed with one side of the transmission gear 62, the driving gear 63 is fixedly arranged on a driving shaft 64, a reversing gear 69 is arranged on one side of the control gear 71, the reversing gear 69 is fixedly arranged on a driving shaft 70, an internal gear 68 is arranged on one side of the reversing gear 69, and the internal gear 68 is fixedly connected with the driving shaft 70.
In another embodiment of the present invention, the control mechanism includes a telescopic shaft 53, the telescopic shaft 53 is rotatably disposed in a sleeve 54, and an electric cylinder is disposed in the sleeve 54, and the electric cylinder controls the telescopic shaft 53 to extend and retract; the telescopic shaft 53 is fixedly provided with a transmission gear 62 and a control gear 71, one side of the transmission gear 62 is meshed with a driving gear 63, the driving gear 63 is fixedly arranged on a driving shaft 64, one side of the control gear 71 is provided with a reversing gear 69, the reversing gear 69 is fixedly arranged on a driving shaft 70, one side of the reversing gear 69 is provided with an internal gear 68, and the internal gear 68 is fixedly connected with the driving shaft 70; a limiting block 55 is arranged on one side of the sleeve 54, the sleeve 54 is rotationally connected with the limiting block 55, a control hydraulic cylinder 57 is arranged on one side of the limiting block 55, the control hydraulic cylinder 57 is fixedly connected with the inner wall of one side of the working space 52, the control hydraulic cylinder 57 is controlled by a control piston 56, and the limiting block 55 is fixedly connected with the control piston 56; the internal gear 68 has an annular gear structure, and the control gear 71 is meshed with the reversing gear 69 or the internal gear 68; the limiting block 55 is fixedly provided with a mounting piece 72, the mounting piece 72 is fixedly provided with a sliding rod 74, the sliding rod 74 is provided with a rack 73 in a sliding manner, one side of the rack 73 is meshed with a gear ring 61, the gear ring 61 is fixedly connected with the sleeve 54, one side of the rack 73 is fixedly provided with a mounting block 60, one side of a control hydraulic cylinder 57 is provided with a connecting block 58, a transmission rod 59 is arranged between the connecting block 58 and the mounting block 60, and two ends of the transmission rod 59 are respectively hinged with the connecting block 58 and the mounting block 60; a one-way bearing is arranged at the joint of the sleeve 54 and the telescopic shaft 53. The control hydraulic cylinder 57 is started, the control piston 56 is controlled to shrink, the limiting block 55 is driven to move, the sleeve 54 and the telescopic shaft 53 move together with the limiting block 55, the control gear 71 and the transmission gear 62 are in a disengaged state, the electric cylinder in the sleeve 54 controls the telescopic shaft 53 to extend, and the control gear 71 and the reversing gear 69 are not in the same horizontal plane; the control piston 56 stretches out, the transmission gear 62 and the driving gear 63 return to the meshing position, the electric cylinder in the sleeve 54 controls the telescopic shaft 53 to stretch out further, and the control gear 71 is meshed with the internal gear 68; in the process, the relative positions of the hydraulic cylinder 57 and the limiting block 55 are controlled to move, so that the transmission rod 59 rotates, the rack 73 slides along the sliding rod 74, the rack 73 drives the gear ring 61 to rotate, the sleeve 54 drives the telescopic shaft 53 to rotate in a small amplitude under the action of the one-way bearing, and the problem that the gear is separated and meshed to enable the gear to be dead against the clamping is avoided. The control gear 71 changes from meshing with the internal gear 68 to meshing with the reversing gear 69, in the same manner as described above.
The working principle of the invention is as follows:
the hydraulic automatic gearbox 11 of the double special FC6A-140 is connected with the connecting flange 12 and the transmission box 13 by high-strength bolts; the power output gear shaft of the double special FC6A-140 hydraulic automatic gearbox 11 is assembled and meshed with the driving shaft 67 of the transmission box 13, and the power of the hydraulic automatic gearbox 11 is transmitted to the transmission bevel gear 66 of the transmission box 13; the drive bevel gear 66 drives the drive bevel gear 65 to rotate, the drive bevel gear 65 drives the drive shaft 64 to rotate, the drive shaft 64 drives the drive gear 62 to rotate, the drive gear 62 drives the telescopic shaft 53 to rotate, the telescopic shaft 53 drives the control gear 71 to rotate, the control gear 71 drives the reversing gear 69 to rotate, and the reversing gear 69 drives the transmission shaft 70 to rotate;
when the steering rod is in the horizontal position, the automatic gear shifter and the pedal accelerator are shifted to operate the vehicle to advance and retreat; in the running process of the vehicle, the foot brake assembly pedal is depressed, the steering valve 26 is pulled by the foot brake device 17, the brake valve rod enables the brake slide valve to gradually move, the right brake oil cylinder 27 and the left brake oil cylinder 28 are started, the brake belt is pulled by hydraulic pressure to lock the brake drum, and the vehicle brake control is carried out on the vehicle. Turning the steering rod of the steering gear 18, pulling a left (right) pulling arm on a steering valve 26 of a hydraulic system 20 to enable a slide valve in the steering valve 26 to start to gradually move so as to adjust the hydraulic pressure of a locking clutch cylinder, gradually separating a friction plate of the locking clutch, enabling a frame shaft not to output power any more, and enabling the vehicle to perform free radius steering; the steering rod continues to rotate, the pressure in the brake clutch oil cylinder is increased, the brake clutch is gradually combined, the steering radius is reduced, and the vehicle starts to turn radially; when the steering lever is turned to the bottom, the oil passage to the brake clutch is closed, and the oil return passage of the brake clutch is opened, so that the brake clutch is returned to the original state, i.e., the disengaged state. The passage to the hydraulic cylinder of the parking brake device on the steering side is opened, the parking brake device is operated, and the brake drum is locked by the brake belt, i.e. the power output shaft on the steering side is locked by the brake. The driving wheel on the side stops rotating. At this time, the frame shaft in the planetary steering gear in the speed reducer 16 is not moved, the gear ring drives the planetary gears to rotate, the sun gear idles in the opposite direction, the gear ring connected with the main shaft is not braked, the vehicle is steered in situ, and the steering radius at this time is the minimum steering radius of the vehicle.
In particular, the extension of the telescopic shaft 53 controlled by the electric cylinder in the sleeve 54 can enable the control gear 71 to mesh with the internal gear 68, the internal gear is used for driving to change the rotation direction of the transmission shaft 70, and the transmission of one side is matched with the speed reducer 16, so that the driving wheels 19 on two sides can rotate reversely at the same speed, and the vehicle is turned in the center.
In order to further improve the use effect of the present invention, two internal gears 68 (not shown) may be provided, that is, two internal gears 68 are respectively provided on two sides of the control hydraulic cylinder 57 (two sides are symmetrical), the driving gear 63 drives one of the internal gears 68, and the driving gear 62 and the control gear 71 transmit power to the other internal gear 68, so that the power is firstly decelerated and accelerated (the addition and subtraction ratio are equal), the power on two sides is identical and the power on two sides is reversed, and the rotation speed is not required to be regulated again through the speed reducer.
In order to further improve the use effect of the present invention, the telescopic shaft 53 may be provided with three sections (not shown), and universal joint transmission is provided between the three sections of telescopic shafts 53, so that the meshing of the transmission gear 62 and the driving gear 63 at one end of the telescopic shaft 53 is not changed, only the meshing of the control gear 71 at the other end with the internal gear 68 or the reversing gear 69 is changed, the position of the middle section of telescopic shaft 53 is not changed, the middle section of telescopic shaft 53 is not fixed (floats), the radial movement of the section of telescopic shaft 53 connected with the control gear 71 is controlled by the control hydraulic cylinder 57, and the axial movement of the telescopic shaft is controlled by the electric cylinder; the gears which do not need to be changed in the meshed state do not move, and unnecessary abrasion is avoided.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The foregoing is merely illustrative of the structures of this invention and various modifications, additions and substitutions for those skilled in the art can be made to the described embodiments without departing from the scope of the invention or from the scope of the invention as defined in the accompanying claims.
Claims (7)
1. A transmission system for an automatic transmission of a tracked vehicle, characterized by: the automatic transmission comprises a gearbox transmission case, wherein the gearbox is connected with the transmission case through bolts and connecting flanges, a working space is arranged in the transmission case, a driving shaft is rotatably arranged on the inner wall of one side of the working space, the driving shaft penetrates through the transmission case, one end of the driving shaft, which is positioned outside the transmission case, is connected with an output shaft of the gearbox, a transmission bevel gear is detachably arranged at one end of the driving shaft, which is positioned in the working space, a driving bevel gear is meshed with one side of the transmission bevel gear, the driving bevel gear is fixedly arranged at one end of the driving shaft, the driving shaft is rotatably connected with the inner wall of one side of the working space, the driving shaft penetrates through the transmission case, and one end, which is far away from the driving bevel gear, of the driving shaft is positioned outside the transmission case; the driving shaft transmits power to the driving wheel through the steering gear, the coupling and the speed reducer in sequence;
a transmission shaft is rotatably arranged on the inner wall of one side of the working space far away from the driving shaft, the transmission shaft penetrates through the transmission box, and one end of the transmission shaft positioned outside the transmission box is identical to one end of the driving shaft positioned outside the transmission box in structure; one end of the transmission shaft positioned in the working space is provided with a control mechanism for transmitting the power of the driving shaft to the transmission shaft;
the control mechanism comprises a telescopic shaft, the telescopic shaft is rotatably arranged in a sleeve, an electric cylinder is arranged in the sleeve, and the electric cylinder controls the telescopic shaft to stretch out and draw back; the telescopic shaft is fixedly provided with a transmission gear and a control gear, one side of the transmission gear is meshed with a driving gear, the driving gear is fixedly arranged on a driving shaft, one side of the control gear is provided with a reversing gear, the reversing gear is fixedly arranged on a transmission shaft, one side of the reversing gear is provided with a special-shaped gear, and the special-shaped gear is fixedly connected with the transmission shaft; the hydraulic control device is characterized in that a limiting block is arranged on one side of the sleeve, the sleeve is rotationally connected with the limiting block, a control hydraulic cylinder is arranged on one side of the limiting block, the control hydraulic cylinder is fixedly connected with the inner wall of one side of the working space, a control piston is controlled by the control hydraulic cylinder, and the limiting block is fixedly connected with the control piston.
2. A transmission system for an automatic transmission for a tracked vehicle according to claim 1, characterized in that: the hydraulic system is used for braking a steering engine and comprises an engine output duplex pump, one side of the engine output duplex pump is connected with a main constant pressure valve, the main constant pressure valve is respectively connected with and controls a steering valve, a right brake cylinder and a left brake cylinder, a radiator is arranged between the right brake cylinder and the left brake cylinder, and the radiator is positioned on one side of the steering valve.
3. A transmission system for an automatic gearbox for a tracked vehicle according to claim 2, characterised in that: an engine oil temperature regulating valve is arranged between the right brake oil cylinder and the main constant pressure valve, one end of the engine oil temperature regulating valve is communicated with the right brake oil cylinder, and the other end of the engine oil temperature regulating valve is communicated with the radiator.
4. A transmission system for an automatic gearbox for a tracked vehicle according to claim 3, characterised in that: the steering system further comprises a foot brake device and a steering gear, wherein the foot brake device and the steering gear are positioned on one side of the coupler, the foot brake device controls the right brake oil cylinder and the left brake oil cylinder, and the steering gear controls a steering valve of the hydraulic system through a steering rod.
5. A transmission system for an automatic transmission for a tracked vehicle according to claim 1, characterized in that: the special-shaped gear is of an inner gear ring structure, and the control gear is meshed with the reversing gear or the special-shaped gear.
6. A transmission system for an automatic transmission for a tracked vehicle according to claim 5, characterized in that: the device is characterized in that a mounting piece is fixedly arranged on the limiting block, a sliding rod is fixedly arranged on the mounting piece, a rack is arranged on the sliding rod in a sliding mode, a gear ring is meshed with one side of the rack, the gear ring is fixedly connected with the sleeve, a mounting block is fixedly arranged on one side of the rack, a connecting block is arranged on one side of the control hydraulic cylinder, a transmission rod is arranged between the connecting block and the mounting block, and two ends of the transmission rod are hinged to the connecting block and the mounting block respectively.
7. A transmission system for an automatic transmission for a tracked vehicle according to claim 6, characterized in that: and a one-way bearing is arranged at the joint of the sleeve and the telescopic shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210614665.6A CN115013483B (en) | 2022-05-30 | 2022-05-30 | Transmission system for automatic gearbox of crawler-type vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210614665.6A CN115013483B (en) | 2022-05-30 | 2022-05-30 | Transmission system for automatic gearbox of crawler-type vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115013483A CN115013483A (en) | 2022-09-06 |
| CN115013483B true CN115013483B (en) | 2023-06-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210614665.6A Active CN115013483B (en) | 2022-05-30 | 2022-05-30 | Transmission system for automatic gearbox of crawler-type vehicle |
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| Country | Link |
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| CN (1) | CN115013483B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116276527A (en) * | 2023-05-15 | 2023-06-23 | 四川飞亚动力科技股份有限公司 | Engine crankshaft polishing equipment |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1019007A (en) * | 1950-05-24 | 1953-01-15 | Further training in agricultural tractors | |
| JP3596012B2 (en) * | 1993-12-24 | 2004-12-02 | 井関農機株式会社 | Tractor |
| DE19646344B4 (en) * | 1996-11-09 | 2006-08-17 | Zf Friedrichshafen Ag | Tracked vehicle transmission |
| DE102014113028A1 (en) * | 2014-09-10 | 2016-03-10 | Claas Industrietechnik Gmbh | Steerable crawler track |
| CN109882571A (en) * | 2019-03-01 | 2019-06-14 | 青岛北海俊惠电子仪表有限公司 | Power transmission and tractor hoist, workover rig containing the power transmission |
| CN112690049B (en) * | 2020-12-23 | 2022-02-18 | 江苏海之诺机械装备有限公司 | No-missing cross shaft transmission soil throwing stubble cleaning rotary cultivator |
| CN113915309B (en) * | 2021-12-15 | 2022-04-12 | 易如(山东)智能科技有限公司 | Mechanical automatic stepless gearbox capable of realizing left-right forward and reverse rotation |
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| Publication number | Publication date |
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| CN115013483A (en) | 2022-09-06 |
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