A vehicle walking mechanism capable of turning around in place

Abstract

The application discloses a car and ship walking mechanism capable of turning around on the spot, and belongs to the technical field of car and ship walking mechanisms. The car and ship walking mechanism comprises a box body, a middle shaft, a transmission shaft one, a transmission shaft two, a bevel gear one, a bevel gear two, a bevel gear three, an infinitely variable speed pump one, an infinitely variable speed pump two, a reduction gear set one and a reduction gear set two. The bevel gear one is arranged on the middle shaft, the bevel gear two is arranged on the transmission shaft one, and the bevel gear three is arranged on the transmission shaft two. The bevel gear two and the bevel gear three are engaged with the bevel gear one. The transmission shaft one is used as a power input end of the infinitely variable speed pump one, and the transmission shaft two is used as a power input end of the infinitely variable speed pump two. The power output ends of the infinitely variable speed pump one and the infinitely variable speed pump two are connected with the reduction gear set one and the reduction gear set two respectively. The output gears of the reduction gear set one and the reduction gear set two are connected with left and right half shafts respectively. The application realizes synchronous forward movement, backward movement or different direction steering of left and right walking wheels through the transmission of the middle shaft, the formation of two independent transmission parts of the bevel gear two and the bevel gear three, and the reversing control of the infinitely variable speed pump one and the infinitely variable speed pump two.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of vehicle and ship walking, and in particular, relates to a vehicle and ship walking mechanism capable of turning around at the original position. BACKGROUND

[0002] With the continuous improvement of the degree of automation of agricultural production, more and more agricultural machinery is put into today's agricultural production, such as harvesters, ploughs, and boat plows. During the use of these agricultural machinery, due to the limitation of the work site, it is not possible to have more idle sites for these agricultural machinery to turn around, and if it can turn around at the original position, it is a better choice. In addition, due to the poor outdoor working environment, the load of these agricultural machinery may increase sharply due to accidental factors such as stones in the field, and the protection of the transmission box and the protection of the plowing operation components become a very important part of these machines. Taking the boat plow as an example, in order to make the boat plow adapt to the requirement of resistance change under various working conditions, so that it can work under various conditions, it is necessary to use a transmission box that can change the speed ratio and transmission torque ratio in its power transmission system.

[0003] In related prior art, the CN211550442U invention patent discloses a stepless speed change transmission mechanism of a boat plow, which comprises a diesel engine, a hydraulic stepless speed change device and an output speed reducer; one end of the boat plow frame is fixed with the diesel engine; the diesel engine is installed in the boat plow frame at one end; the input shaft is connected with the output end of the diesel engine at one end; the hydraulic stepless speed change device is fixed on the side of the input shaft of the boat plow frame, which can realize stepless speed change of the boat plow in each gear position, and does not affect the output power of the boat plow, thereby solving the problem that the existing boat plow cannot work normally when decelerating, but it still cannot realize turning around at the original position, and it is inconvenient to work in the field. SUMMARY

[0004] In order to make up for the above shortcomings, the present application provides a vehicle and ship walking mechanism capable of turning around at the original position, which aims to solve the problem that the transmission box of the existing agricultural machinery cannot realize turning around at the original position.

[0005] The present application is implemented as follows:

[0006] The application discloses a turning mechanism of a vehicle, which comprises a box body, a middle shaft, a transmission shaft 1, a transmission shaft 2, a bevel gear 1, a bevel gear 2, a bevel gear 3, a stepless speed change pump 1, a stepless speed change pump 2, a speed reduction gear set 1 and a speed reduction gear set 2, the bevel gear 1 is arranged on the middle shaft, the bevel gear 2 is arranged on the transmission shaft 1, the bevel gear 3 is arranged on the transmission shaft 2, the bevel gear 2 and the bevel gear 3 are engaged with the bevel gear 1, the transmission shaft 1 is used as a power input end of the stepless speed change pump 1, the transmission shaft 2 is used as a power input end of the stepless speed change pump 2, the power output ends of the stepless speed change pump 1 and the stepless speed change pump 2 are connected with the speed reduction gear set 1 and the speed reduction gear set 2 respectively, and the output gears of the speed reduction gear set 1 and the speed reduction gear set 2 are connected with left and right half shafts respectively.

[0007] Further, the speed reduction gear set 1 and the speed reduction gear set 2 comprise a shift assembly 1, a shift assembly 2, a rotating gear assembly 1, a rotating gear assembly 2 and a half shaft which are sequentially connected.

[0008] Further, the shift assembly 1 comprises a shift part and a shift lever part, and the shift lever part is connected with the shift part.

[0009] Further, the shift shaft 1, a shift gear 1 and a starting gear, the shift gear 1 and the starting gear are sequentially arranged on the shift shaft 1, and the shift gear 1 can linearly move along the length of the shift shaft 1.

[0010] Further, the shift lever part comprises a shift lever shaft, a shift lever, a lever shaft, a connecting plate 1, a shaft sleeve and a connecting plate 2, the shift lever is fixed on the shift lever shaft, the shift lever is provided with a connecting part 1 and a connecting part 2 respectively, the connecting part 2 is connected with the shift gear 1, the connecting plate 1 and the shaft sleeve are arranged on two ends of the lever shaft respectively, the connecting plate 2 is fixed with the shaft sleeve, one end of the connecting plate 1 away from the lever shaft is connected with the connecting part 2, and the connecting plate 1 and the connecting plate 2 are arranged in a non-parallel mode.

[0011] Further, the shift assembly 2 comprises a shift shaft 2, a shift gear 2, a shift gear 3 and a shift gear 4, the shift gear 2, the shift gear 3 and the shift gear 4 are sequentially arranged on the shift shaft 2.

[0012] Further, the rotating gear assembly 1 comprises a rotating shaft 1, a rotating gear 1 and a rotating gear 2, the rotating gear 1 and the rotating gear 2 are sequentially arranged on the rotating shaft 1, the rotating gear 1 is engaged with the shift gear 3, and the three-pole rotating gear 2 is engaged with the output gear.

[0013] Further, the rotating gear assembly two comprises a rotating shaft two, a three-pole rotating gear one and a three-pole rotating gear two, the three-pole rotating gear one and the three-pole rotating gear two are sequentially sleeved on the rotating shaft two, and the three-pole rotating gear one is engaged with the rotating gear two.

[0014] Further, the half shaft comprises a wheel edge shaft and a sleeve pipe, the sleeve pipe is sleeved on the wheel edge shaft, and the output gear is sleeved on the wheel edge shaft.

[0015] Further, the middle shaft (21) is a gear shaft, the end of the middle shaft (21) is a gear for connecting a second load, a spline bevel gear one (29) is further arranged on the middle shaft (21) for connecting a third load, the third load comprises a spline shaft (211) and a spline bevel gear two (210) arranged on the spline shaft (211), and the spline bevel gear two (210) is engaged with the spline bevel gear one (29).

[0016] The application uses the middle shaft as the main transmission, the bevel gear two and the bevel gear three form two independent transmissions, are connected with the stepless variable speed pump one and the stepless variable speed pump two respectively to perform speed vector control, and then the speed size and respective directions of two drives connected with the left half shaft and the right half shaft are changed, synchronous forward movement, backward movement or different direction steering of the left driving wheel and the right driving wheel are realized, the middle shaft towing load is fully utilized, and multi-load distribution is realized. The walking mechanism of the application is symmetrical in structure and reasonable in stress, and is convenient to repair. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the application, and therefore should not be regarded as a limitation to the scope. Other related drawings can also be obtained by those skilled in the art without creative labor.

[0018] Figure 1 is an assembly view of a car and ship walking mechanism capable of turning around on the spot provided by the embodiments of the application;

[0019] Figure 2 is a structure schematic view of the inside of a box provided by the embodiments of the application;

[0020] Figure 3 is a structure schematic view of the inside of a box provided by the embodiments of the application;

[0021] Figure 4 is a sectional view of a gear shifting assembly one provided by the embodiments of the application;

[0022] Figure 5 is a structure schematic view of a part of a yoke pull rod component one provided by the embodiments of the application.

[0023] Figure 6 is a structural schematic view of another part of the shift fork pull rod component provided by the embodiment of the present application;

[0024] Figure 7 is a sectional view of the shift assembly two provided by the embodiment of the present application;

[0025] Figure 8 is a structural schematic view of the rotating gear assembly one provided by the embodiment of the present application;

[0026] Figure 9 is a structural schematic view of the rotating gear assembly two provided by the embodiment of the present application;

[0027] Figure 10 is a sectional view of the half shaft provided by the embodiment of the present application;

[0028] Figure 11 is a sectional view of the gland provided by the embodiment of the present application.

[0029] BRIEF DESCRIPTION OF THE DRAWINGS: 10, box; 11, gland; 21, central shaft; 22, transmission shaft one; 23, transmission shaft two; 24, bevel gear one; 25, bevel gear two; 26, bevel gear three; 27, stepless variable speed pump one; 28, stepless variable speed pump two; 29, rotary tillage spline bevel gear one; 210, rotary tillage spline bevel gear two; 211, rotary tillage spline shaft; 30a, reduction gear set one; 30b, reduction gear set two; 30c, output gear; 31, shift assembly one; 311, shift component; 3111, shift shaft one; 3112, shift gear one; 3113, starting gear; 312, shift fork pull rod assembly; 3121, shift fork shaft; 3122, shift fork; 3122a, connecting part one; 3122b, connecting part two; 3123, pull rod shaft; 3124, connecting plate one; 3125, shaft sleeve; 3126, connecting plate two; 32, shift assembly two; 321, shift shaft two; 322, shift gear two; 323, shift gear three; 324, shift gear four; 33, rotating gear assembly one; 331, rotating shaft one; 332, rotating gear one; 333, rotating gear two; 34, rotating gear assembly two; 341, rotating shaft two; 342, three-pole rotating gear one; 343, three-pole rotating gear two; 35, half shaft; 351, wheel edge shaft; 352, sleeve; 36, bearing; 37, oil seal. DETAILED DESCRIPTION

[0030] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0031] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0032] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0033] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" 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 device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0034] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0035] Embodiments

[0036] Referring to the drawings Figures 1-2As shown, the application provides a technical solution: a car and ship walking mechanism capable of turning around in place, comprising a box 10, a middle shaft 21, a transmission shaft 22, a transmission shaft 23, a bevel gear 24, a bevel gear 25, a bevel gear 26, an infinitely variable speed pump 27, an infinitely variable speed pump 28, and a reduction gear set 1 and a reduction gear set 2, the bevel gear 24 is sleeved on the middle shaft 21, the bevel gear 25 is sleeved on the transmission shaft 22, the bevel gear 26 is sleeved on the transmission shaft 23, the bevel gear 25 and the bevel gear 26 are engaged with the bevel gear 24, the transmission shaft 22 is the power input end of the infinitely variable speed pump 27, the transmission shaft 23 is the power input end of the infinitely variable speed pump 28, the power output ends of the infinitely variable speed pump 27 and the infinitely variable speed pump 28 are connected with the reduction gear set 1 30a and the reduction gear set 2 30b respectively, the output gears 30c of the reduction gear set 1 30a and the reduction gear set 2 30b are connected with the left and right half shafts respectively, and the left and right half shafts drive the left and right tires, tracks and the like.

[0037] Exemplarily, the car and ship walking mechanism capable of turning around in place can be a farm boat, a land tiller or a harvester in an agricultural machine, and of course can be an engineering machine with low walking speed. For example, the driving device 1 is an electric motor, an engine or a diesel engine, and the driving device 2 is an electric motor and a 7-shaped push rod. The model of the infinitely variable speed pump 2 can be LY-HPVMF-37-L-02C.

[0038] According to the embodiment, the middle shaft 21 is the input power source, the power output by the middle shaft 21 passes through two independent transmission parts formed by the bevel gear 25 and the bevel gear 26, and at the same time, the control of the rotation direction is realized through the positive and reverse oil paths of the infinitely variable speed pump itself, so that the walking wheels can realize forward movement or backward movement when rotating in the same direction and turning around in place when rotating in different directions. At the same time, each infinitely variable speed pump can drive the two transmission parts to realize variable speed driving. Compared with the prior art, the application realizes transmission through the middle shaft 21, forms two independent transmission parts through the bevel gear 25 and the bevel gear 26, realizes the reversing control through the infinitely variable speed pump 1 27 and the infinitely variable speed pump 2 28, and finally realizes the synchronous forward movement, backward movement or different direction turning of the synchronous wheels. Moreover, the split design makes the structure simpler and more convenient to maintain. Further, the correlation between the structures is reduced, thereby reducing the friction loss between the structures, improving the transmission efficiency, and promoting the improvement of the output power.

[0039] Referring to the drawings Figures 2-3 As shown, in some embodiments of the land tiller, a rotary tiller spline bevel gear 1 29, a rotary tiller spline bevel gear 2 210 and a rotary tiller spline shaft 211 are included, the rotary tiller spline bevel gear is sleeved on the middle shaft 21, the rotary tiller spline bevel gear 2 210 is sleeved on the rotary tiller spline shaft 211, and the rotary tiller spline bevel gear 2 210 is engaged with the rotary tiller spline bevel gear 1 29.

[0040] The rotary tillage spline shaft 211 is capable of being connected with the rotary tillage tool.

[0041] According to this embodiment, the middle shaft 21 rotates, and the rotary tillage spline bevel gear one 29 also rotates, so that the rotary tillage spline bevel gear two 210 drives the rotary tillage spline shaft 211 to rotate, and the rotary tillage spline shaft 211 drives the rotary tillage tool to perform the rotary tillage operation.

[0042] Referring to FIGS. 1 to 10, in some embodiments, the speed reduction gear set one 30a and the speed reduction gear set two 30b each include a shift assembly one 31, a shift assembly two 32, a rotating gear assembly one 33, a rotating gear assembly two 34, and a half shaft 35 connected in sequence. Figure 2 4 According to this embodiment, the driving device one provides kinetic energy, and each infinitely variable speed pump drives the corresponding shift assembly one 31 to rotate. At the same time, the driving device two adjusts the shift assembly one 31, so that the transmission ratio of the shift assembly one 31 and the shift assembly two 32 is changed. Thus, the rotary kinetic energy is sequentially transmitted to the rotating gear assembly one 33, the rotating gear assembly two 34, and the half shaft 35, so as to realize variable speed driving.

[0043] Referring to FIGS. 1 to 10, in some embodiments, the shift assembly one 31 includes a shift component 311 and a shift fork 3122 pull rod component connected with the shift component 311.

[0044] According to this embodiment, the shift fork 3122 pull rod component adjusts the shift component 311, so as to change the power output by the shift component 311. Figure 2 4 Referring to FIGS. 1 to 10, in some embodiments, the shift shaft one 3111, the shift gear one 3112, and the starting gear 3113 are sequentially sleeved on the shift shaft one 3111, and the shift gear one 3112 can linearly move along the length of the shift shaft one 3111.

[0045] According to this embodiment, when the infinitely variable speed pump one 27 and the infinitely variable speed pump two 28 drive the respective shift shaft one 3111, the shift shaft one 3111 can drive the shift gear one 3112 and the starting gear 3113 to rotate, so as to change the meshing relationship of the shift gear one 3112 with the shift gear two 322 and the shift gear four 324, and to realize shift variable speed.

[0046] Referring to FIGS. 1 to 10, in some embodiments, the shift shaft one 3111, the shift gear one 3112, and the starting gear 3113 are sequentially sleeved on the shift shaft one 3111, and the shift gear one 3112 can linearly move along the length of the shift shaft one 3111. Figure 2 4 According to this embodiment, when the infinitely variable speed pump one 27 and the infinitely variable speed pump two 28 drive the respective shift shaft one 3111, the shift shaft one 3111 can drive the shift gear one 3112 and the starting gear 3113 to rotate, so as to change the meshing relationship of the shift gear one 3112 with the shift gear two 322 and the shift gear four 324, and to realize shift variable speed.

[0047] According to this embodiment, when the infinitely variable speed pump one 27 and the infinitely variable speed pump two 28 drive the respective shift shaft one 3111, the shift shaft one 3111 can drive the shift gear one 3112 and the starting gear 3113 to rotate, so as to change the meshing relationship of the shift gear one 3112 with the shift gear two 322 and the shift gear four 324, and to realize shift variable speed.

[0048] Referring to FIGS. 1 to 10, in some embodiments, the shift shaft one 3111, the shift gear one 3112, and the starting gear 3113 are sequentially sleeved on the shift shaft one 3111, and the shift gear one 3112 can linearly move along the length of the shift shaft one 3111. Figure 2 5 ​​​​As shown in FIG. 6, in some embodiments, the shift fork 3122 component includes a shift fork shaft 3121, a shift fork 3122, a pull rod shaft 3123, a connecting plate one 3124, a shaft sleeve 3125, and a connecting plate two 3126. The shift fork 3122 is fixed on the shift fork shaft 3121, and the shift fork 3122 has a connecting part one 3122a and a connecting part two 3122b respectively. The connecting part two 3122b is connected with the shift gear one 3112. The connecting plate one 3124 and the shaft sleeve 3125 are respectively sleeved on both ends of the pull rod shaft 3123. The connecting plate two 3126 is fixed with the shaft sleeve 3125. The end of the connecting plate one 3124 away from the pull rod shaft 3123 is connected with the connecting part two 3122b. The connecting plate one 3124 and the connecting plate two 3126 are arranged in a non-parallel manner.

[0049] For example, the connecting part one 3122a is located between the large gear and the small gear of the shift gear one 3112.

[0050] According to this embodiment, when the connecting plate two 3126 is affected by the power of the driving device two, the connecting plate two 3126 drives the pull rod shaft 3123 and the connecting plate one 3124 to rotate, so that the connecting plate one 3124 cooperates with the connecting part two 3122b to apply a pushing force to the shift gear one 3112. When the shift fork shaft 3121 is moved, the connecting part one 3122a of the shift fork 3122 can push the shift gear one 3112 to move linearly along the shift fork shaft 3121, so as to change the meshing relationship between the shift gear one 3112 and the shift gear two 322 and the shift gear four 324.

[0051] Referring to FIGS. 1-6, Figure 2 and 7 As shown in FIG. 6, in some embodiments, the shift fork 3122 component includes a shift fork shaft 3121, a shift fork 3122, a pull rod shaft 3123, a connecting plate one 3124, a shaft sleeve 3125, and a connecting plate two 3126. The shift fork 3122 is fixed on the shift fork shaft 3121, and the shift fork 3122 has a connecting part one 3122a and a connecting part two 3122b respectively. The connecting part two 3122b is connected with the shift gear one 3112. The connecting plate one 3124 and the shaft sleeve 3125 are respectively sleeved on both ends of the pull rod shaft 3123. The connecting plate two 3126 is fixed with the shaft sleeve 3125. The end of the connecting plate one 3124 away from the pull rod shaft 3123 is connected with the connecting part two 3122b. The connecting plate one 3124 and the connecting plate two 3126 are arranged in a non-parallel manner.

[0052] According to this embodiment, when the connecting plate two 3126 is affected by the power of the driving device two, the connecting plate two 3126 drives the pull rod shaft 3123 and the connecting plate one 3124 to rotate, so that the connecting plate one 3124 cooperates with the connecting part two 3122b to apply a pushing force to the shift gear one 3112. When the shift fork shaft 3121 is moved, the connecting part one 3122a of the shift fork 3122 can push the shift gear one 3112 to move linearly along the shift fork shaft 3121, so as to change the meshing relationship between the shift gear one 3112 and the shift gear two 322 and the shift gear four 324.

[0053] Referring to FIGS. 1-6, Figure 2 and 8 As shown in FIG. 6, in some embodiments, the shift fork 3122 component includes a shift fork shaft 3121, a shift fork 3122, a pull rod shaft 3123, a connecting plate one 3124, a shaft sleeve 3125, and a connecting plate two 3126. The shift fork 3122 is fixed on the shift fork shaft 3121, and the shift fork 3122 has a connecting part one 3122a and a connecting part two 3122b respectively. The connecting part two 3122b is connected with the shift gear one 3112. The connecting plate one 3124 and the shaft sleeve 3125 are respectively sleeved on both ends of the pull rod shaft 3123. The connecting plate two 3126 is fixed with the shaft sleeve 3125. The end of the connecting plate one 3124 away from the pull rod shaft 3123 is connected with the connecting part two 3122b. The connecting plate one 3124 and the connecting plate two 3126 are arranged in a non-parallel manner.

[0054] According to this embodiment, the shift gear 323 drives the rotating gear 1 332 to rotate, which in turn causes the rotating shaft 1 331 and the rotating gear 2 333 to rotate, so that the rotating gear 2 333 transmits power to the rotating gear assembly 2 34.

[0055] See attached document Figure 2 and 9 As shown, in some embodiments, the rotating gear assembly 34 includes a rotating shaft 341, a three-pole rotating gear 342, and a three-pole rotating gear 343. The three-pole rotating gear 342 and the three-pole rotating gear 343 are sequentially sleeved on the rotating shaft 341. The three-pole rotating gear 342 meshes with the rotating gear 343, and the three-pole rotating gear 343 meshes with the output gear 30c.

[0056] According to this embodiment, by driving the rotating gear 2 333 to the three-pole rotating gear 1 342, the rotating shaft 2 341 can be driven to the three-pole rotating gear 2 343, so that the three-pole rotating gear 2 343 can drive the half shaft 35.

[0057] See attached document Figure 2 and 9 As shown, in some embodiments, the half-shaft 35 includes a wheel-side shaft 351 and a sleeve 353, with the sleeve 353 fitted onto the wheel-side shaft 351 and the output gear 30c fitted onto the wheel-side shaft 352.

[0058] According to this embodiment, the wheel-side shaft 351 is driven by the output gear 30c to achieve variable speed drive.

[0059] See attached document Figure 1 As shown, in some embodiments, the housing 10 is provided with pressure caps 11 at both ends of the first rotating shaft 331 and the second rotating shaft 341.

[0060] See attached document Figure 4 and 7 As shown in Figures 1-10, in some embodiments, gears are provided at both ends of the shift shaft 3111, the shift shaft 321, the rotating shaft 331, and the rotating shaft 341, and at least three gears are provided between the wheel shaft 351 and the sleeve 353.

[0061] According to this embodiment, this configuration can reduce frictional losses during the rotation of each shaft, thereby improving transmission efficiency.

[0062] See attached document Figure 5 and 10 As shown in Figures 1-11, in some embodiments, oil seals 37 are provided on the shift fork shaft 3121, the pressure cap 11, and between the wheel side shaft 351 and the sleeve 353.

[0063] Next, the gearbox synchronization forward, reverse or spin around the example.

[0064] For example, the drive device one input power to the shaft 21, due to the opposite direction of the bevel gear two 25 and bevel gear three 26, by controlling the positive and negative oil pump one 27 and pump two 27 and 28 (assuming control pump one 27 positive oil, control pump two 28 negative oil), so that the two variable speed pump one 27 and pump two 27 and 28 can output the same direction of the shift component 311, ultimately can make two wheels forward or reverse synchronization. Similarly, the drive device one input power to the shaft 21, due to the opposite direction of the two bevel gear two 25 and bevel gear three 26, by pump one 27 and pump two 27 and 28 (assuming control pump one 27 and pump two 27 and 28 positive or negative oil), so that the two variable speed pump can output the opposite direction of the shift component 311, ultimately can make two wheels rotate in different directions, so that the agricultural machinery spin around to achieve steering.

[0065] Specifically, the working principle of the car and ship walking mechanism: the drive device one drive shaft 21 rotation, so that the bevel gear one 24 drive bevel gear two 25 and bevel gear three 26 rotation, so that the bevel gear two 25 to the input shaft of the variable speed pump one 27 transmission, bevel gear three 26 to the input shaft of the variable speed pump two 28 transmission. According to the actual needs of forward, reverse or steering, by controlling the variable speed pump one 27 and pump two 27 and 28 can be connected to the shift shaft one 3111 direction, so that the variable speed pump one 27 and pump two 27 and 28 drive connected with the shift shaft one 3111, shift gear one 3112 and start gear 3113 rotation. Then, the drive device two to the connecting plate two 3126 exerting power, connecting plate two 3126 drive connecting rod shaft 3123 and connecting plate one 3124 rotation, so that the connecting plate one 3124 and connecting part two 3122b cooperation, to the shift fork 3122 exerting thrust. At this time, the shift fork 3122 of the connecting part one 3122a can push shift gear one 3112 along the shift fork shaft 3121 linearly, so as to change the engagement relationship between shift gear one 3112 and shift gear two 322 and shift gear four 324. At the same time, by shift gear three 323 drive rotating gear one 332 rotation, can make rotating shaft one 331 and rotating gear two 333 rotation, so that the rotating gear two 333 to the three pole rotating gear one 342, three pole rotating gear two 343 to the output gear 30c and wheel shaft 351 in turn transmission, so as to make the wheel shaft 351 variable speed drive.

[0066] The above merely describes the preferred embodiments of the present application, and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A mecanum vehicle capable of making a U-turn in place, characterized in that, The application relates to a transmission mechanism, which comprises a box (10), a middle shaft (21), a transmission shaft I (22), a transmission shaft II (23), a bevel gear I (24), a bevel gear II (25), a bevel gear III (26), an infinitely variable speed pump I (27), an infinitely variable speed pump II (28), a reduction gear set I (30a) and a reduction gear set II (30b), the bevel gear I (24) is sleeved on the middle shaft (21), the bevel gear II (25) is sleeved on the transmission shaft I (22), the bevel gear III (26) is sleeved on the transmission shaft II (23), the bevel gear II (25) and the bevel gear III (26) are engaged with the bevel gear I (24), the transmission shaft I (22) is used as a power input end of the infinitely variable speed pump I (27), the transmission shaft II (23) is used as a power input end of the infinitely variable speed pump II (28), power output ends of the infinitely variable speed pump I (27) and the infinitely variable speed pump II (28) are connected with input ends of the reduction gear set I (30a) and the reduction gear set II (30b) respectively, and output gears (30c) of the reduction gear set I (30a) and the reduction gear set II (30b) are connected with left and right half shafts (35) respectively.

2. The turn-on-itself vehicle according to claim 1, characterized in that, The reduction gear set I (30a) and the reduction gear set II (30b) each comprise a gear shifting assembly I (31), a gear shifting assembly II (32), a rotating gear assembly I (33), a rotating gear assembly II (34) and a half shaft (35) which are connected in sequence.

3. The turn-on-itself vehicle according to claim 2, wherein The gear shifting assembly I (31) comprises a gear shifting part (311) and a shift lever part, and the shift lever part is connected with the gear shifting part (311).

4. The turn-on-itself vehicle according to claim 3, wherein The gear shifting shaft I (3111), a gear shifting gear I (3112) and a starting gear (3113) are sleeved on the gear shifting shaft I (3111) in sequence, and the gear shifting gear I (3112) can move linearly along the length of the gear shifting shaft I (3111).

5. The turn-on-itself vehicle according to claim 4, wherein The shift lever part comprises a shift lever shaft (3121), a shift lever (3122), a shift lever shaft (3123), a connecting plate I (3124), a shaft sleeve (3125) and a connecting plate II (3126), the shift lever (3122) is fixed on the shift lever shaft (3121), the shift lever (3122) is provided with a connecting part I (3122a) and a connecting part II (3122b) respectively, the connecting part II (3122b) is connected with the gear shifting gear I (3112), the connecting plate I (3124) and the shaft sleeve (3125) are sleeved on two ends of the shift lever shaft (3123) respectively, the connecting plate II (3126) is fixed with the shaft sleeve (3125), one end of the connecting plate I (3124) away from the shift lever shaft (3123) is connected with the connecting part II (3122b), and the connecting plate I (3124) and the connecting plate II (3126) are arranged in a non-parallel mode.

6. The turn-on-itself vehicle according to claim 5, wherein The gear shift component two (32) comprises a gear shift shaft two (321), a gear shift gear two (322), a gear shift gear three (323) and a gear shift gear four (324), the gear shift gear two (322), the gear shift gear three (323) and the gear shift gear four (324) are sequentially sleeved on the gear shift shaft two (321).

7. The turn-on-itself vehicle according to claim 6, wherein The rotating gear component one (33) comprises a rotating shaft one (331), a rotating gear one (332) and a rotating gear two (333), the rotating gear one (332) and the rotating gear two (333) are sequentially sleeved on the rotating shaft one (331), the rotating gear one (332) is engaged with the gear shift gear three (323).

8. The turn-on-itself vehicle according to claim 7, wherein The rotating gear component two (34) comprises a rotating shaft two (341), a three-pole rotating gear one (342) and a three-pole rotating gear two (343), the three-pole rotating gear one (342) and the three-pole rotating gear two (343) are sequentially sleeved on the rotating shaft two (341), the three-pole rotating gear one (342) is engaged with the rotating gear two (333), and the three-pole rotating gear two (343) is engaged with the output gear (30c).

9. The turn-on-itself vehicle according to claim 8, wherein The half shaft (35) comprises a wheel edge shaft (351) and a sleeve pipe (352), the sleeve pipe (352) is sleeved on the wheel edge shaft (351), and the output gear (30c) is sleeved on the wheel edge shaft (351).

10. The turn-on-itself vehicle of claim 1, wherein, The middle shaft (21) is a gear shaft, the end of which is a gear for connecting a second load, and a spline bevel gear one (29) is further arranged on the middle shaft (21) for connecting a third load, the third load comprises a spline shaft (211) and a spline bevel gear two (210) arranged on the spline shaft (211), and the spline bevel gear two (210) is engaged with the spline bevel gear one (29).

Images