Chassis system of corn ensilage machine

Abstract

The utility model belongs to the technical field of corn ensilage and harvesting, and particularly relates to a corn ensilage machine chassis system which comprises a frame, a front wheel driving mechanism and a rear wheel driving mechanism, and at least two sets of connecting rod mechanisms are arranged between the rear wheel driving mechanism and the frame in the left-right direction at intervals. The connecting rod mechanism is rotationally connected with the rear wheel driving mechanism and the frame, the damping supporting structure is supported between the rear wheel driving mechanism and the frame, and the front-drive component force driving box is arranged at the rear wheel driving mechanism and is in transmission connection with a bevel gear of a differential mechanism in the rear driving axle box. A transmission connecting rod is arranged between an output shaft of the front-drive component force drive box and an input shaft of a front drive axle box of a drive axle of the front wheel drive mechanism. The front wheel driving mechanism and the rear wheel driving mechanism can drive the corresponding wheels at the same time, the rear wheel driving mechanism forms a floating connection structure for buffering and damping, and the problems that an existing high-ground-clearance corn silage machine is unstable in walking and poor in damping effect are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of corn silage harvesting, and in particular relates to a chassis system of a corn silage machine. Background Art

[0002] At present, whether it is silage harvesting of male corn during hybrid seed production or silage harvesting of selected rows during dense corn planting, the silage harvesting of corn is mainly carried out by using a corn silage machine with high ground clearance to cross the rows and harvest the corn above the corn plants. Since the ground clearance of the corn silage machine is relatively large and there are uneven problems inside the corn field, the corn silage machine is very unstable when walking. The existing corn silage machine mainly relies on leaf springs or springs for shock absorption, which cannot be applied to the complex working conditions of the corn field. Utility Model Content

[0003] The utility model aims to provide a corn silage machine chassis system, aiming to solve the problems of unstable walking and poor shock absorption effect of the existing corn silage machine with high ground clearance.

[0004] The utility model discloses a chassis system of a corn silage machine, the chassis system of the corn silage machine comprises a frame, a front-wheel drive mechanism and a rear-wheel drive mechanism are installed on the frame, the front-wheel drive mechanism and the rear-wheel drive mechanism respectively comprise a drive axle; at least two groups of connecting rod mechanisms spaced apart in the left-right direction are arranged between the rear-wheel drive mechanism and the frame, each group of the connecting rod mechanisms is rotatably connected with the rear-wheel drive mechanism and the frame respectively, and also comprises a shock-absorbing support structure supported between the rear-wheel drive mechanism and the frame, a front-drive force component drive box which is arranged at the side of the rear drive axle box of the drive axle of the rear-wheel drive mechanism and is transmission-connected with the differential bevel gear inside the rear drive axle box, and a transmission connecting rod is arranged between the output shaft of the front-drive force component drive box and the input shaft of the front drive axle box of the drive axle of the front-wheel drive mechanism.

[0005] As an improvement, the front-wheel drive mechanism and the rear-wheel drive mechanism also include a crossbeam, high ground clearance bridge legs respectively installed at the two ends of the crossbeam, and wheels arranged at the lower ends of the high ground clearance bridge legs. The drive axle is installed on the crossbeam, and an upper power transmission box is provided between the end of the drive axle and the upper end of the high ground clearance bridge leg, and a lower power transmission box is provided between the lower end of the high ground clearance bridge leg and the wheel.

[0006] As an improvement, the connecting rod mechanism is arranged between the cross beam of the rear wheel drive mechanism and the vehicle frame, and the shock absorbing support structure is supported between the cross beam of the rear wheel drive mechanism and the vehicle frame.

[0007] As an improvement, the connecting rod mechanism includes a lower connecting rod, an upper connecting rod arranged above the lower connecting rod and parallel to the lower connecting rod, the two ends of the lower connecting rod and the two ends of the upper connecting rod are respectively connected to the cross beam of the rear wheel drive mechanism and the frame for rotation, the connecting line between the rotation connection between the lower connecting rod and the cross beam of the rear wheel drive mechanism and the rotation connection between the upper connecting rod and the cross beam of the rear wheel drive mechanism is parallel to the connecting line between the rotation connection between the lower connecting rod and the frame and the rotation connection between the upper connecting rod and the frame.

[0008] As an improvement, the connecting rod mechanism is provided with two groups, which are respectively arranged on the left and right sides of the frame. An intermediate connecting rod is also provided between the two groups of the connecting rod mechanisms. The intermediate connecting rod is parallel to the lower connecting rod and the upper connecting rod, and the two ends of the intermediate connecting rod are respectively connected to the cross beam of the rear wheel drive mechanism and the frame for rotation.

[0009] As an improvement, the frame includes a front frame body, a rear frame body arranged at the upper side of the front frame body, and a connecting frame body supported between the front frame body and the rear frame body, the rear frame body extending beyond the rear part of the front frame body; the rear-wheel drive mechanism is arranged on the lower side of the frame body portion of the rear frame body extending beyond the rear part of the front frame body, the shock-absorbing support structure is arranged between the crossbeam of the rear-wheel drive mechanism and the frame body portion of the rear frame body extending beyond the rear part of the front frame body; the lower connecting rod is arranged between the rear part of the front frame body and the lower side of the crossbeam of the rear-wheel drive mechanism, and the upper connecting rod is arranged between the connecting frame body and the upper side of the crossbeam of the rear-wheel drive mechanism; the crossbeam of the front-wheel drive mechanism is fixed to the front part of the front frame body.

[0010] As an improvement, the shock-absorbing support structure includes at least two buffer cylinders and a hydraulic oil storage tank spaced apart in the left-right direction, the oil inlet and the oil outlet of the buffer cylinder are respectively connected to the hydraulic oil storage tank, and the buffer cylinder is connected between the crossbeam of the rear wheel drive mechanism and the frame.

[0011] As an improvement, the shock-absorbing support structure further includes a buffer airbag arranged between the crossbeam of the rear wheel drive mechanism and the vehicle frame.

[0012] As an improvement, two buffer oil cylinders are arranged at intervals, respectively arranged at the left and right sides of the frame; and two buffer airbags are arranged at intervals, respectively corresponding to the two buffer oil cylinders.

[0013] As an improvement, the transmission connecting rod is arranged as a split structure, including a first transmission connecting rod arranged on one side of the front-wheel drive force component driving box, a second transmission connecting rod arranged on one side of the front-wheel drive mechanism, and a third transmission connecting rod arranged between the first transmission connecting rod and the second transmission connecting rod. The third transmission connecting rod is rotatably installed on the frame, and universal rotating connectors are respectively arranged between the first transmission connecting rod and the output shaft of the front-wheel drive force component driving box, between the first transmission connecting rod and the third transmission connecting rod, between the third transmission connecting rod and the second transmission connecting rod, and between the second transmission connecting rod and the input shaft of the front drive axle box of the drive axle of the front-wheel drive mechanism.

[0014] Due to the adoption of the above-mentioned technical scheme, the chassis system of the corn silage machine of the utility model includes a frame, on which a front-wheel drive mechanism and a rear-wheel drive mechanism are installed, and the front-wheel drive mechanism and the rear-wheel drive mechanism respectively include a drive axle; at least two groups of connecting rod mechanisms are arranged at intervals along the left-right direction between the rear-wheel drive mechanism and the frame, and each group of connecting rod mechanisms is rotatably connected to the rear-wheel drive mechanism and the frame respectively, and also includes a shock-absorbing support structure supported between the rear-wheel drive mechanism and the frame, and a front-wheel drive component drive box that is arranged at the side of the rear drive axle box of the drive axle of the rear-wheel drive mechanism and is connected to the differential bevel gear inside the rear drive axle box; a transmission connecting rod is provided between the output shaft of the front-wheel drive component drive box and the input shaft of the front drive axle box of the drive axle of the front-wheel drive mechanism.

[0015] Due to the transmission connection between the engine and the input shaft of the rear drive axle box of the drive axle of the rear-wheel drive mechanism, the rear-wheel drive mechanism can be provided with a driving force. At the same time, a front-wheel drive force component drive box connected to the driven bevel gear inside the rear drive axle box is provided at the side of the rear drive axle box of the drive axle of the rear-wheel drive mechanism. A transmission connecting rod is provided between the output shaft of the front drive force component drive box and the input shaft of the front drive axle box of the drive axle of the front-wheel drive mechanism. The rear-wheel drive mechanism can also provide power for the front-wheel drive mechanism to form a four-wheel drive structure, which is convenient for the corn silage machine to walk stably in the corn field. Since the rear-wheel drive mechanism is connected to the frame through at least two sets of connecting rod mechanisms and shock-absorbing support structures, a floating connection structure can be formed, which is convenient for buffering and shock-absorbing the cargo box on the frame, and at the same time, it can ensure that the two wheels of the rear-wheel drive mechanism are always in contact with the ground, which can enhance the grip of the wheels, make the walking of the corn silage machine with high ground clearance more stable, and can adapt to different corn field working conditions to avoid tilting during walking.

[0016] The front-wheel drive mechanism and the rear-wheel drive mechanism of the chassis system of the corn silage machine of the utility model can respectively provide driving force for the corresponding wheels to form a four-wheel drive structure, which can ensure the stable movement of the corn silage machine in the corn field. Moreover, since the rear-wheel drive mechanism is connected to the frame through at least two sets of connecting rod mechanisms and a shock-absorbing support structure, a floating connection structure can be formed, which is convenient for buffering and shock-absorbing the cargo box on the frame, and at the same time ensures that the two wheels of the rear-wheel drive mechanism are always in contact with the ground, thereby enhancing the gripping ability of the wheels, and solving the problems of unstable walking and poor shock-absorbing effect of existing corn silage machines with high ground clearance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the chassis system of the corn silage machine of the utility model;

[0018] Figure 2 It is a schematic diagram of the top view of the chassis system of the corn silage machine of the utility model;

[0019] Figure 3 It is a rear view structural schematic diagram of the chassis system of the corn silage machine of the utility model;

[0020] Figure 4 It is a side view structural schematic diagram of the chassis system of the corn silage machine of the utility model;

[0021] Figure 5 It is a three-dimensional structural schematic diagram of the rear wheel drive mechanism of the chassis system of the corn silage machine of the utility model;

[0022] Figure 6 It is a three-dimensional structural schematic diagram of the front wheel drive mechanism of the chassis system of the corn silage machine of the utility model;

[0023] Among them, 10, frame; 11, front frame body; 12, rear frame body; 13, connecting frame body; 14, unloading bracket; 20a, front wheel drive mechanism; 20b, rear wheel drive mechanism; 21, drive axle; 211, rear drive axle box; 212, front drive axle box; 213, output half shaft; 22, wheel; 23, high ground clearance bridge leg; 231, upper leg body; 232, lower leg body; 233, bridge leg connecting arm; 24, upper power transmission box; 241 , input shaft; 25, lower power transmission box; 26, steering drive mechanism; 27, spacing adjustment mechanism; 28, crossbeam; 30, connecting rod mechanism; 31, lower connecting rod; 32, upper connecting rod; 33, intermediate connecting rod; 40, buffer cylinder; 50, buffer airbag; 60, front drive force distribution drive box; 70, transmission connecting rod; 71, first transmission connecting rod; 72, second transmission connecting rod; 73, third transmission connecting rod; 80, engine; 90, variable piston pump. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0025] Figures 1 to 6 This is a schematic diagram of the structure of the chassis system of the corn silage machine of the utility model, wherein: Figure 1 The three-dimensional structure diagram of the chassis system of the corn silage machine of the utility model is shown. Figure 2 The top view of the chassis system of the corn silage machine of the utility model is shown. Figure 3 The rear view structural diagram of the chassis system of the corn silage machine of the utility model is shown. Figure 4 The side view of the chassis system of the corn silage machine of the utility model is shown. Figure 5 The three-dimensional structure schematic diagram of the rear wheel drive mechanism of the chassis system of the corn silage machine of the utility model is shown. Figure 6 The three-dimensional structural schematic diagram of the front wheel drive mechanism of the chassis system of the corn silage machine of the present invention is shown. For the convenience of description, only the parts related to the present invention are shown in the figure.

[0026] Depend on Figures 1 to 6 It can be seen that the chassis system of the corn silage machine of the utility model includes a frame 10, on which a front-wheel drive mechanism 20a and a rear-wheel drive mechanism 20b are installed, and the front-wheel drive mechanism 20a and the rear-wheel drive mechanism 20b respectively include a drive axle 21; at least two groups of connecting rod mechanisms 30 arranged at intervals along the left and right directions are connected between the rear-wheel drive mechanism 20b and the frame 10, and each group of connecting rod mechanisms 30 is rotatably connected to the rear-wheel drive mechanism 20b and the frame 10 respectively, and also includes a shock-absorbing support structure supported between the rear-wheel drive mechanism 20b and the frame 10, and a front-wheel drive component drive box 60 connected to the differential bevel gear inside the rear drive axle box 211 at the side of the rear drive axle box 211 of the drive axle 21 of the rear-wheel drive mechanism 20b, and a transmission connecting rod 70 is provided between the output shaft of the front-wheel drive component drive box 60 and the input shaft of the front drive axle box 212 of the drive axle 21 of the front-wheel drive mechanism 20a.

[0027] Specifically, the front-wheel drive mechanism 20a and the rear-wheel drive mechanism 20b also include wheels 22 respectively arranged at the two ends of the drive axle 21, high ground clearance bridge legs 23 are respectively provided between the two ends of the drive axle 21 and the wheels 22 on the corresponding sides, an upper power transmission box 24 is provided between the end of the drive axle 21 and the upper end of the high ground clearance bridge leg 23, and a lower power transmission box 25 is provided between the lower end of the high ground clearance bridge leg 23 and the wheel 22; the cab is installed on the upper side of the front part of the frame 10, and the cargo box is installed on the upper side of the rear part of the frame 10. Usually, an engine 80 is installed on the frame 10 between the cab and the cargo box, and the engine 80 is drivingly connected to the input shaft of the drive axle 21 of the rear-wheel drive mechanism 20b.

[0028] Since the engine 80 is connected to the input shaft of the rear drive axle box 211 of the drive axle 21 of the rear wheel drive mechanism 20b, it can provide driving force for the rear wheel drive mechanism 20b. At the same time, a front drive force component drive box 60 connected to the driven bevel gear inside the rear drive axle box 211 is provided at the side of the rear drive axle box 211 of the drive axle 21 of the rear wheel drive mechanism 20b. A transmission connecting rod 70 is provided between the output shaft of the front drive force component drive box 60 and the input shaft of the front drive axle box 212 of the drive axle 21 of the front wheel drive mechanism 20a. The rear wheel drive mechanism 20b can also provide driving force for the front wheel drive mechanism 20b. The driving mechanism 20a provides power to form a four-wheel drive structure, which is convenient for the corn silage machine to move stably in the corn field; because the rear-wheel driving mechanism 20b is connected to the frame 10 through at least two sets of connecting rod mechanisms 30 and the shock-absorbing support structure, a floating connection structure can be formed, which is convenient for buffering and shock-absorbing the cargo box on the frame 10, and at the same time can ensure that the two wheels 22 of the rear-wheel driving mechanism 20b are always in contact with the ground, which can enhance the gripping ability of the wheels 22, making the walking of the corn silage machine with high ground clearance more stable, and can adapt to different corn field working conditions to avoid tilting during walking.

[0029] The front-wheel drive mechanism 20a and the rear-wheel drive mechanism 20b of the chassis system of the corn silage machine of the utility model can respectively provide driving force for the corresponding wheels 22 to form a four-wheel drive structure, which can ensure that the corn silage machine can walk stably in the corn field. Moreover, since the rear-wheel drive mechanism 20b is connected to the frame 10 through at least two sets of connecting rod mechanisms 30 and the shock-absorbing support structure, a floating connection structure can be formed, which is convenient for buffering and shock-absorbing the cargo box on the frame 10, and at the same time ensures that the two wheels 22 of the rear-wheel drive mechanism 20b are always in contact with the ground, thereby enhancing the gripping ability of the wheels 22, and solving the problems of unstable walking and poor shock-absorbing effect of the existing corn silage machine with high ground clearance.

[0030] In the present utility model, the front wheel drive mechanism 20 a and the rear wheel drive mechanism 20 b further include a cross beam 28 , the drive axle 21 is mounted on the cross beam 28 , and the high ground clearance bridge legs 23 are mounted at the ends of the cross beam 28 .

[0031] In order to facilitate the adjustment of the wheel spacing between the two wheels 22, a bridge leg connecting arm 233 slidably connected to the cross beam 28 is fixed on the high ground clearance bridge leg 23, and a spacing adjustment mechanism 27 for driving the high ground clearance bridge leg 23 to slide in the direction of approaching / moving away from the cross beam 28 is provided between the cross beam 28 and the high ground clearance bridge leg 23. Usually, the spacing adjustment mechanism 27 is a spacing adjustment cylinder; correspondingly, the output half shaft 213 of the drive axle 21 is coaxially arranged with the input shaft 241 of the upper power transmission box 24, and the output half shaft 213 and the input shaft 241 of the upper power transmission box 24 are axially slidably connected, and the output half shaft 213 and the input shaft 241 of the upper power transmission box 24 cannot rotate relative to each other. Typically, a plurality of ridges extending along the axial direction are provided on the outer peripheral side of the input shaft 241 of the upper power transmission box 24, and the corresponding output half-shaft 213 is set as a sleeve, and a slide groove is provided on the inner wall of the sleeve corresponding to each ridge, and the axial sliding between the output half-shaft 213 and the input shaft 241 of the upper power transmission box 24 is achieved through the cooperation between the plurality of ridges and the plurality of slide grooves, and no relative rotation occurs; of course, the output half-shaft 213 can also be set as a prismatic sleeve, and the input shaft 241 of the upper power transmission box 24 can be set as a prism matching the sleeve.

[0032] Specifically, the cross beam 28 is a square-shaped support tube body, and the bridge leg connecting arm 233 is a square-shaped plug-in tube body, which is inserted into the interior of the support tube body and is slidably connected after being assembled. Usually, a fastening structure such as a bolt or a plug pin is provided between the support tube body and the plug-in tube body to prevent the distance between the two wheels 22 from changing due to an accident. Of course, a slide rail and slider assembly and a lead screw nut assembly can also be provided between the cross beam 28 and the bridge leg connecting arm 233 to achieve a slidable connection.

[0033] In the present invention, the steering of the corn silage machine is achieved by the front wheel drive mechanism 20a. Figure 6 As shown, the high ground clearance bridge leg 23 of the front wheel drive mechanism 20a includes an upper leg body 231 and a lower leg body 232 rotatably mounted at the lower part of the upper leg body 231, a steering drive mechanism 26 is provided between the upper leg body 231 and the lower leg body 232, and usually, the steering drive mechanism 26 is a steering cylinder; the upper power transmission box 24 is fixed at the upper part of the upper leg body 231, and the lower power transmission box 25 is fixed at the lower part of the lower leg body 232, the output shaft of the upper power transmission box 24 and the input shaft of the lower power transmission box 25 are connected together to form a transmission shaft passing through the upper leg body 231 and the lower leg body 232, and a bearing is provided between the upper part of the lower leg body 232 and the corresponding transmission shaft.

[0034] In the present utility model, if Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the link mechanism 30 is disposed between the cross beam 28 of the rear wheel drive mechanism 20 b and the vehicle frame 10 , and the shock absorbing support structure is supported between the cross beam 28 of the rear wheel drive mechanism 20 b and the vehicle frame 10 .

[0035] Specifically, the connecting rod mechanism 30 includes a lower connecting rod 31 and an upper connecting rod 32 arranged above the lower connecting rod 31 and parallel to the lower connecting rod 31. The two ends of the lower connecting rod 31 and the two ends of the upper connecting rod 32 are respectively rotatably connected to the cross beam 28 of the rear wheel drive mechanism 20b and the frame 10. The connecting line between the rotation connection between the lower connecting rod 31 and the cross beam 28 of the rear wheel drive mechanism 20b and the rotation connection between the upper connecting rod 32 and the cross beam 28 of the rear wheel drive mechanism 20b is parallel to the connecting line between the rotation connection between the lower connecting rod 31 and the frame 10 and the rotation connection between the upper connecting rod 32 and the frame 10. Typically, two groups of link mechanisms 30 are provided, which are respectively provided on the left and right sides of the frame 10. In order to enhance the connection performance between the rear wheel drive mechanism 20b and the frame 10, an intermediate link 33 is also provided between the two groups of link mechanisms 30. The intermediate link 33 is parallel to the lower link 31 and the upper link 32, and the two ends of the intermediate link 33 are respectively rotatably connected to the cross beam 28 of the rear wheel drive mechanism 20b and the frame 10.

[0036] The shock-absorbing support structure includes at least two buffer cylinders 40 and a hydraulic oil storage tank (not shown in the figure) arranged at intervals along the left and right directions. The oil inlet and the oil outlet of the buffer cylinder 40 are respectively connected to the hydraulic oil storage tank. The cylinder body and the piston rod of the buffer cylinder 40 are respectively installed on the crossbeam 28 and the frame 10 of the rear wheel drive mechanism 20b.

[0037] Specifically, the cylinder body and piston rod of the buffer oil cylinder 40 are respectively rotatably connected to the cross beam 28 of the rear wheel drive mechanism 20b and the frame 10. In some other embodiments, the buffer oil cylinder 40 is arranged in a direction such that the connection line between the rotation connection point between the lower connecting rod 31 and the cross beam 28 of the rear wheel drive mechanism 20b, the connection line between the rotation connection point between the upper connecting rod 32 and the cross beam 28 of the rear wheel drive mechanism 20b, and the connection line between the rotation connection point between the lower connecting rod 31 and the frame 10, and the connection line between the rotation connection point between the upper connecting rod 32 and the frame 10 are parallel. In this case, the cylinder body and piston rod of the buffer oil cylinder 40 are respectively fixedly connected or rotatably connected to the cross beam 28 of the rear wheel drive mechanism 20b and the frame 10.

[0038] Typically, two buffer cylinders 40 are provided at intervals and are disposed at left and right sides of the vehicle frame 10 , respectively.

[0039] In order to enhance the buffering and shock absorbing effect, the shock absorbing support structure also includes a buffer airbag 50 arranged between the crossbeam 28 of the rear wheel drive mechanism 20b and the frame 10. Usually, two buffer airbags 50 are arranged at intervals and respectively correspond to the two buffer cylinders 40.

[0040] In the present invention, since the distance between the front-wheel drive mechanism 20a and the rear-wheel drive mechanism 20b is relatively large, the transmission link 70 is usually set to a split structure, and the transmission link 70 includes a first transmission link 71 arranged on one side of the front-wheel drive force component drive box 60, a second transmission link 72 arranged on one side of the front-wheel drive mechanism 20a, and a third transmission link 73 arranged between the first transmission link 71 and the second transmission link 72. The third transmission link 73 is rotatably installed on the frame 10, and universal rotating connectors are respectively provided between the first transmission link 71 and the output shaft of the front-wheel drive force component drive box 60, between the first transmission link 71 and the third transmission link 73, between the third transmission link 73 and the second transmission link 72, and between the second transmission link 72 and the input shaft of the front drive axle box 411 of the drive axle 21 of the front-wheel drive mechanism 20a, so as to facilitate the arrangement of the directions of the first transmission link 71 and the second transmission link 72 according to the actual space, and to reduce the production cost.

[0041] In some other embodiments, the transmission connecting rod 70 is configured as an integrated rod, and universal joints are respectively provided between the transmission connecting rod 70 and the output shaft of the front drive force component drive box 60 and the input shaft of the front drive axle box 212 of the drive axle 21 of the front wheel drive mechanism 20a. When relative movement occurs between the frame 10 and the rear wheel drive mechanism 20b, it will not affect the transmission of driving force between the front drive force component drive box 60 and the front wheel drive mechanism 20a.

[0042] In the present utility model, if Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the vehicle frame 10 includes a front frame body 11, a rear frame body 12 arranged at the upper side of the front frame body 11, and a connecting frame body 13 supported between the front frame body 11 and the rear frame body 12, and the rear frame body 12 extends to the outside of the rear part of the front frame body 11; the rear wheel drive mechanism 20b is arranged on the lower side of the frame part of the rear frame body 12 extending to the outside of the rear part of the front frame body 11, and the shock-absorbing support structure is arranged between the cross beam 28 of the rear wheel drive mechanism 20b and the frame part of the rear frame body 12 extending to the outside of the rear part of the front frame body 11; the lower link 31 of the connecting rod mechanism 30 is arranged between the rear part of the front frame body 11 and the lower side of the cross beam 28 of the rear wheel drive mechanism 20b, and the upper link 32 is arranged between the connecting frame body 13 and the upper side of the cross beam 28 of the rear wheel drive mechanism 20b; the cross beam 28 of the front wheel drive mechanism 20a is fixed to the front part of the front frame body 11.

[0043] In order to facilitate the flipping and unloading of the cargo box, an upwardly extending unloading bracket 14 is provided at the rear of the frame 10, and the upper side edge of the rear baffle of the cargo box is rotatably connected to the unloading bracket. A lifting drive mechanism is provided between the frame 10 and the bottom plate of the cargo box. Usually, the lifting drive mechanism is a lifting cylinder.

[0044] In the present invention, a rear-wheel drive mechanism 20b is provided with a rear-drive hydraulic motor, and an output shaft of the rear-drive hydraulic motor is fixedly connected to an input shaft of a rear drive axle box 211 of the rear-wheel drive mechanism 20b via a coupling.

[0045] Specifically, a variable displacement piston pump 90 is installed on the engine 80, and the variable displacement piston pump 90 is connected to the rear drive hydraulic motor to provide walking power.

[0046] At the same time, a power steering pump is also provided on the engine 80, and a priority valve is connected in series to the power steering pump. The priority valve is connected to the steering cylinder and is used to give priority to the steering of the corn silage machine. A multi-way valve is also connected to the priority valve, and the multi-way valve is respectively connected to the spacing adjustment cylinder for adjusting the wheel spacing between the two wheels 22 and the lifting cylinder of the cargo box.

[0047] Of course, the output shaft of the engine 80 may be connected to the input shaft of the gearbox, and then the output shaft of the gearbox may be connected to the input shaft of the rear drive axle box 211 of the rear wheel drive mechanism 20b.

[0048] In the present utility model, the structure of the driving axle 21 and the structure of the high ground clearance bridge leg 23 are both well-known technologies, and their specific structures are not described in detail here.

[0049] In order to realize the transmission connection between the front-wheel drive force component driving box 60 and the rear drive axle box 211 of the drive axle 21 of the rear-wheel drive mechanism 20b, a force component transmission bevel gear meshing with the driven bevel gear of the differential and an output bevel gear meshing with the force component transmission bevel gear are rotatably installed inside the rear drive axle box 211, and an output shaft fixedly connected to the input shaft of the front-wheel drive force component driving box 60 is fixed on the output bevel gear; the front-wheel drive force component driving box 60 includes a box body, a force component active bevel gear rotatably installed inside the box body, and a force component output bevel gear rotatably installed inside the box body and meshing with the force component active bevel gear, an input shaft (the input shaft of the front-wheel drive force component driving box 60) is fixed on the force component active bevel gear, and an output shaft (the output shaft of the front-wheel drive force component driving box 60) is fixed on the force component output bevel gear.

[0050] The above descriptions are only some embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A chassis system for a corn silage machine, comprising a frame, on which a front wheel drive mechanism and a rear wheel drive mechanism are mounted, wherein the front wheel drive mechanism and the rear wheel drive mechanism respectively include a drive axle; characterized in that: At least two groups of connecting rod mechanisms are arranged between the rear-wheel drive mechanism and the frame at intervals along the left-right direction, and each group of the connecting rod mechanisms is rotatably connected to the rear-wheel drive mechanism and the frame respectively. It also includes a shock-absorbing support structure supported between the rear-wheel drive mechanism and the frame, and a front-wheel drive force component drive box that is arranged at the side of the rear drive axle box of the drive axle of the rear-wheel drive mechanism and is connected to the differential bevel gear inside the rear drive axle box. A transmission connecting rod is provided between the output shaft of the front-wheel drive force component drive box and the input shaft of the front drive axle box of the drive axle of the front-wheel drive mechanism.

2. The corn silage machine chassis system according to claim 1, characterized in that: The front-wheel drive mechanism and the rear-wheel drive mechanism also include a crossbeam, high-ground clearance bridge legs respectively installed at the two ends of the crossbeam, and wheels arranged at the lower ends of the high-ground clearance bridge legs. The drive axle is installed on the crossbeam, and an upper power transmission box is provided between the end of the drive axle and the upper end of the high-ground clearance bridge leg, and a lower power transmission box is provided between the lower end of the high-ground clearance bridge leg and the wheel.

3. The corn silage machine chassis system according to claim 2, characterized in that: The connecting rod mechanism is arranged between the cross beam of the rear wheel drive mechanism and the vehicle frame, and the shock absorbing support structure is supported between the cross beam of the rear wheel drive mechanism and the vehicle frame.

4. The corn silage machine chassis system according to claim 3, characterized in that: The connecting rod mechanism includes a lower connecting rod, an upper connecting rod arranged above the lower connecting rod and parallel to the lower connecting rod, both ends of the lower connecting rod and the upper connecting rod are respectively connected to the cross beam of the rear wheel drive mechanism and the frame for rotation, and the connecting line between the rotation connection between the lower connecting rod and the cross beam of the rear wheel drive mechanism and the rotation connection between the upper connecting rod and the cross beam of the rear wheel drive mechanism is parallel to the connecting line between the rotation connection between the lower connecting rod and the frame and the connecting line between the rotation connection between the upper connecting rod and the frame.

5. The corn silage machine chassis system according to claim 4, characterized in that: The connecting rod mechanism is provided with two groups, which are respectively arranged on the left and right sides of the frame. An intermediate connecting rod is also provided between the two groups of the connecting rod mechanisms. The intermediate connecting rod is parallel to the lower connecting rod and the upper connecting rod, and the two ends of the intermediate connecting rod are respectively connected to the cross beam of the rear wheel drive mechanism and the frame for rotation.

6. The corn silage machine chassis system according to claim 4, characterized in that: The frame includes a front frame body, a rear frame body disposed on the upper side of the front frame body, and a connecting frame body supported between the front frame body and the rear frame body, wherein the rear frame body extends beyond the rear portion of the front frame body; The rear-wheel drive mechanism is arranged on the lower side of the frame portion of the rear frame extending beyond the rear of the front frame, and the shock-absorbing support structure is arranged between the crossbeam of the rear-wheel drive mechanism and the frame portion of the rear frame extending beyond the rear of the front frame; the lower connecting rod is arranged between the rear of the front frame and the lower side of the crossbeam of the rear-wheel drive mechanism, and the upper connecting rod is arranged between the connecting frame and the upper side of the crossbeam of the rear-wheel drive mechanism; the crossbeam of the front-wheel drive mechanism is fixed to the front of the front frame.

7. The corn silage machine chassis system according to claim 2, characterized in that: The shock-absorbing support structure includes at least two buffer cylinders and a hydraulic oil storage tank spaced apart in the left-right direction. The oil inlet and the oil outlet of the buffer cylinder are respectively connected to the hydraulic oil storage tank. The buffer cylinder is connected between the crossbeam of the rear wheel drive mechanism and the frame.

8. The corn silage machine chassis system according to claim 7, characterized in that: The shock-absorbing support structure also includes a buffer airbag arranged between the cross beam of the rear wheel drive mechanism and the vehicle frame.

9. The corn silage machine chassis system according to claim 8, characterized in that: Two buffer oil cylinders are arranged at intervals, and are respectively arranged at the left and right sides of the frame; two buffer airbags are arranged at intervals, and are respectively arranged corresponding to the two buffer oil cylinders.

10. The corn silage machine chassis system according to any one of claims 1 to 9, characterized in that: The transmission link is arranged as a split structure, including a first transmission link arranged at one side of the front-wheel drive force component driving box, a second transmission link arranged at one side of the front-wheel drive mechanism, and a third transmission link arranged between the first transmission link and the second transmission link. The third transmission link is rotatably installed on the frame, and universal rotating connectors are respectively arranged between the first transmission link and the output shaft of the front-wheel drive force component driving box, between the first transmission link and the third transmission link, between the third transmission link and the second transmission link, and between the second transmission link and the input shaft of the front drive axle box of the drive axle of the front-wheel drive mechanism.

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