CN213262575U - Agricultural carrier suitable for various road environments - Google Patents

Abstract

In order to solve the not enough of prior art, the utility model provides an agricultural delivery machine suitable for multiple road environment, include: a vehicle frame. And the top end of the head of the frame is provided with a cab. The front bottom end of the frame is connected with the front wheel through a first suspension mechanism and a front wheel shaft mechanism. The bottom end of the rear part of the frame is connected with the rear wheel through a second suspension mechanism and a rear wheel shaft mechanism. And a driving system is arranged below the cab in the frame. The driving system comprises a driving mechanism and a transfer case. The drive mechanism includes: an engine and a gearbox. The controller of the transfer case is arranged in the cab, the first drive output end of the controller is in drive connection with the wheel axle part of the front wheel axle mechanism through the first drive shaft, and the second drive output end of the controller is in drive connection with the wheel axle part of the rear wheel axle mechanism through the second drive shaft. The utility model discloses can drive 2 and 4 fast switch-over that drive, adopt suitable drive mode on the road of difference.

Description

Agricultural carrier suitable for various road environments

Technical Field

The utility model relates to an agricultural machine's technical field especially relates to an agricultural delivery machine suitable for multiple road environment.

Background

An agricultural carrier, commonly known as a tractor, is a common carrier in agriculture. The existing tractor generally adopts a front wheel 2-wheel driving mode, so that the problem of slipping on muddy roads is easy to occur, and climbing on mountainous roads is not easy. There are also tractors using 4-wheel drive, but they are relatively oil-consuming and have problems such as wheel collapse on potholes due to the use of conventional leaf springs as suspension mechanisms.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem that exists among the prior art, the utility model provides an agricultural delivery machine suitable for multiple road environment, include: a vehicle frame. A cab is mounted at the top end of the head of the frame, and a loading bucket is arranged behind the cab. The front bottom end of the frame is fixed with the front wheel shaft mechanism through the first suspension mechanism. And the driving output end of the front wheel shaft mechanism is respectively connected with the front wheels. The bottom end of the rear part of the frame is fixed with the rear wheel shaft mechanism through a second suspension mechanism. And the driving output end of the rear wheel shaft mechanism is respectively connected with the rear wheels. And a driving system is arranged below the cab in the frame. The driving system comprises a driving mechanism and a transfer case. The drive mechanism includes: an engine and a gearbox. The output end of the engine is in driving connection with the input end of the gearbox, and the output end of the gearbox is in driving connection with the input end of the transfer case. The controller of the transfer case is arranged in the cab, the first drive output end of the controller is in drive connection with the wheel axle part of the front wheel axle mechanism through the first drive shaft, and the second drive output end of the controller is in drive connection with the wheel axle part of the rear wheel axle mechanism through the second drive shaft.

Further, the first suspension mechanism includes: an upper V-shaped hard bracket and a lower V-shaped hard bracket. The opening end of the upper V-shaped hard support is fixed with the bottom of the frame respectively, and the closed end of the upper V-shaped hard support is fixedly connected with the first rotating connecting plate. The opening end of the lower V-shaped hard support is respectively fixed with the bottom of the front wheel axle mechanism, and the closed end is fixedly connected with the second rotating connecting plate. The first rotating connecting plate and the second rotating connecting plate are rotatably connected through a first horizontal rotating shaft.

Furthermore, an upper backing plate is respectively fixed at the bottom of the opening end of the lower V-shaped hard bracket. The upper backing plate is a hollow hard square pipe, the upper backing plate is perpendicular to the axial direction of the front wheel shaft mechanism, the lower end of the upper backing plate is attached to the outer contour of the front wheel shaft mechanism, and the two ends of the upper backing plate extend to the outside of the front wheel shaft mechanism. A lower backing plate is arranged at the position below the front wheel axle mechanism and corresponding to the upper backing plate. The lower backing plate is a hollow hard square pipe and is perpendicular to the axial direction of the front wheel shaft mechanism, the top end of the lower backing plate is attached to the outer contour of the front wheel shaft mechanism, and the two ends of the lower backing plate extend to the outside of the front wheel shaft mechanism. The fixed plate is sleeved below the lower backing plate, the top end of the U-shaped buckle is sleeved on the plate body, extending to the outside of the front axle mechanism, of the upper backing plate, and the bottom end of the U-shaped buckle is detachably fixed on the fixed plate.

Further, the second suspension mechanism is: and the bottom end of the steel plate spring is fixed at the top of the shell of the rear wheel shaft mechanism, and the top end of the steel plate spring is fixed at the bottom end of the carrying support. The top end of the carrying bracket is fixed at the bottom of the frame.

Further, the carrier is provided with an oil pressure rotating system. The oil pressure rotating system includes: and the rotation sensor is sleeved outside the bottom end of the steering wheel rod. And the signal output end of the rotation sensor is in signal connection with the control signal input end of the oil pressure push rod. The oil pressure push rod comprises a fixed part and a push rod part, the bottom of the fixed part is hinged to the frame, and the top of the push rod part is connected with a first cross rod of the first steering mechanism through a first vertical rotating shaft. The first wheel hub part of the first steering mechanism is fixedly provided with a front wheel in a sleeved mode, and the top end of the second cross rod is connected with one end of the steering connecting rod through a second vertical rotating shaft. The other end of the steering connecting rod is connected with a third cross rod of the second steering mechanism through a second vertical rotating shaft. And the second hub part of the second steering mechanism is fixedly provided with another front wheel in a sleeved mode.

Further, the first steering mechanism includes: a first steering sleeve. The front wheel shaft mechanism comprises a first shaft sleeve and a first driving wheel shaft positioned in the first shaft sleeve. The tail end of the first shaft sleeve is positioned in the first steering sleeve, is rotatably connected with the first steering sleeve through a first fixed rotating shaft, and is clamped between the first shaft sleeve and the first steering sleeve to form a first steering cavity. One end of the first driving wheel shaft is in driving connection with the first driving shaft, and the other end of the first driving wheel shaft extends into the first steering cavity and is fixed with a first driving fork of the first ball fork type constant velocity universal joint. A first driven fork of the first spherical fork type constant velocity universal joint is fixedly connected with a first transmission wheel shaft. The first transmission wheel shaft penetrates through the first steering sleeve and is fixedly connected with the first hub part.

Further, a shaft cover is fixed at the top end of the first steering sleeve through a screw. The shaft cover is provided with a first cross rod along the horizontal direction.

Further, the second steering mechanism includes: and a second steering sleeve. The front wheel shaft mechanism comprises a first shaft sleeve and a second driving wheel shaft positioned in the first shaft sleeve. The other end of the first shaft sleeve is positioned in the second steering sleeve, is rotatably connected with the second steering sleeve through a second fixed rotating shaft, and is clamped with the second steering sleeve to form a second steering cavity. One end of the second driving wheel shaft is in driving connection with the first driving shaft, and the other end of the second driving wheel shaft extends into the second steering cavity and is fixed with the first driving fork of the second ball fork type constant velocity universal joint. And a first passive fork of the second spherical fork type constant velocity universal joint is fixedly connected with the second transmission wheel shaft. And the second transmission wheel shaft passes through the second steering sleeve and is fixedly connected with the second hub part.

Furthermore, the bottom end of the fixed part of the oil pressure push rod is provided with a circular ring sleeve along the horizontal direction, and a fixed base is sleeved outside the circular ring sleeve. The fixed base is fixed at the bottom of the frame. The fixed base is provided with a fixed shaft penetrating through the annular sleeve at the annular sleeve. The inner circle aperture of the circular ring sleeve is 1-5mm larger than the diameter of the fixed shaft.

Furthermore, a silencer is arranged at the tail end of the tail gas discharge pipe of the engine. The muffler includes: and the air inlet pipe is communicated with the exhaust pipe. The tail end of the air inlet pipe is hermetically provided with an outer sleeve, and a buffer cavity is arranged between the outer wall of the air inlet pipe and the inner wall of the outer sleeve. More than 2 through holes are arranged in a part of the air inlet pipe positioned in the outer sleeve in a matrix manner. And the outer wall of the outer sleeve is provided with an air outlet pipe at the opposite side of the air inlet pipe. The air outlet pipe is communicated with the buffer cavity.

The utility model discloses in still including the necessary mechanism of delivery machine that adopts current structural design, if: brake system, oil feeding system, tipping bucket system, steering wheel system, engine start-stop system, etc. The present invention is not intended to represent the present invention only in detail for the parts of the vehicle relating to technical improvements, but rather the present invention is only intended to encompass the above technical solutions of the mechanism.

Adopt the utility model provides an among the above-mentioned technical scheme, can obtain one of following beneficial effect at least:

1. the utility model discloses can drive 2 and 4 fast switch-over that drive, adopt suitable drive mode on the road of difference, still guarantee when the fuel-efficient that the delivery machine has sufficient delivery and non-skid capability.

2. The utility model discloses a front suspension system of independently designing can prevent effectively that the skidding and the crater condition that appear of front drive wheel on the hollow road surface.

3. The utility model discloses an oil pressure steering system can be very laborsaving realization steering control.

Drawings

Fig. 1 is a schematic structural view of the agricultural carrier suitable for various road environments.

Fig. 2 is a schematic structural diagram of the first suspension mechanism of the present invention.

Fig. 3 is a schematic structural diagram of the second suspension mechanism of the present invention.

Fig. 4 is a schematic structural diagram of the oil pressure rotating system of the present invention.

Fig. 5 is a schematic structural diagram of the first steering mechanism of the present invention.

Fig. 6 is a schematic structural view of a second steering mechanism of the present invention.

Fig. 7 is a schematic view of the installation structure of the oil pressure push rod of the present invention.

Fig. 8 is a schematic structural diagram of the muffler of the present invention.

Detailed Description

The following detailed description will be made with reference to the accompanying drawings and examples, so as to solve the technical problems by applying technical means to the present invention, and to fully understand and implement the technical effects of the present invention. It should be noted that the specific description is only for the purpose of making the present invention easier and clearer for those skilled in the art to understand, and is not intended to be a limiting explanation of the present invention. And as long as no conflict is formed, the embodiments and the features in the embodiments of the present invention can be combined with each other, and the technical solutions formed are all within the scope of the present invention.

The technical solution of the present invention is described in detail below with reference to the accompanying drawings and specific embodiments:

example 1

An agricultural vehicle suitable for use in a variety of road environments, as shown in fig. 1, comprising: a vehicle frame 1. A cab 2 is mounted at the top end of the head of the frame 1, and a loading bucket 3 is arranged behind the cab 2. The front bottom end of the frame 1 is fixed with a front wheel axle mechanism 5 through a first suspension mechanism 4. And the driving output ends of the front wheel shaft mechanisms 6 are respectively connected with the front wheels 6. The bottom end of the rear part of the frame 1 is fixed with a rear wheel shaft mechanism 8 through a second suspension mechanism 7. And the driving output end of the rear wheel shaft mechanism 8 is respectively connected with the rear wheels 9. A driving system is arranged below the cab 2 in the frame 1. The driving system comprises a driving mechanism 10 and a transfer case 11. The drive mechanism 10 includes: an engine and a gearbox. The output end of the engine is in driving connection with the input end of the gearbox, and the output end of the gearbox is in driving connection with the input end of the transfer case 11. The control 1101 of said transfer case 11 is arranged in the driver's cabin 2 with its first drive output in driving connection with the axle part of the front axle mechanism 5 via a first drive shaft 1102 and with its second drive output in driving connection with the axle part of the rear axle mechanism 8 via a second drive shaft 1103. The engine, the gearbox, the transfer case 11, the front axle mechanism 5 and the rear axle mechanism 8 are all conventional existing devices. For example: the engine adopts an agricultural diesel engine, and the gearbox adopts a 4-stage speed change gearbox and the like.

Wherein, the driver sits in the cab 2, controls the lifting of the loading bucket 3 through a tipping bucket system, and controls the starting/closing and the rotating speed of the engine through an oil supply system and a brake system. The engine drives the input end of the gearbox to rotate, and the output rotating speed of the gearbox is controlled through gear engaging operation of a driver in the cab 2. According to different road conditions, a driver can control the transfer case 11 to drive the first driving shaft 1102 to rotate only or drive the first driving shaft 1102 and the second driving shaft 1103 to rotate simultaneously through the controller 1101 of the transfer case 11 in the cab 2, so that 2-drive/4-drive conversion is realized. For example: when the vehicle runs on a smooth road with a good road condition, the mode is switched to the 2-wheel drive mode, and oil can be saved. When the road surfaces such as climbing with large load, complex road surface condition, mountain land with large gradient and the like run, the road surface is switched to 4-wheel drive, and sufficient ground grabbing force can be provided.

Example 2

Based on the agricultural vehicle suitable for various road environments described in embodiment 1, as shown in fig. 2, the first suspension mechanism 4 includes: an upper V-shaped hard bracket 403 and a lower V-shaped hard bracket 401. The open end of the upper V-shaped hard bracket 403 is respectively fixed with the bottom of the frame 1, and the closed end is fixedly connected with the first rotating connecting plate 404. The open end of the lower V-shaped hard bracket 401 is respectively fixed with the bottom of the front wheel axle mechanism 5, and the closed end is fixedly connected with the second rotating connecting plate 402. The first rotation connecting plate 404 and the second rotation connecting plate 402 are rotatably connected by a first horizontal rotating shaft 405.

As shown in fig. 3, the second suspension mechanism 7 is: and the bottom end of the steel plate spring is fixed at the top of the shell of the rear wheel shaft mechanism 8, and the top end of the steel plate spring is fixed at the bottom end of the carrying support 101. The top end of the carrying bracket 101 is fixed at the bottom of the frame 1.

At the moment, the original front and rear wheel shafts are all leaf spring type suspension mechanisms, the front wheel is suspended in an X shape, and the rear wheel is damped in a leaf spring type mode. The X type hangs and hangs the mechanism for the rigidity, and the lower extreme can be followed the central pivot of X mechanism and deflected from top to bottom, is pressed down the opposite side wheel at a wheel by road protrusion thing, like the stone after lifting to improve the land fertility of grabbing of opposite side wheel, avoid the wheel unsettled to skid, corresponding leaf spring formula hangs the mechanism then does not have this effect. When a single-side pothole is encountered, even if the gravity center of the vehicle is not in the pothole, the side wheel can still sink into the pothole to provide ground gripping force, the corresponding steel plate spring type suspension wheel can not sink under the environment, the side wheel can be suspended, and the other side of the wheel can slip due to insufficient ground gripping force. In addition, the reason why only the front wheel is suspended by the X-type suspension and the rear wheel is still suspended by the leaf spring type suspension is that: the front wheels are relatively low loaded and accordingly need to be powered in either 2-drive or 4-drive modes, thus requiring more road surface adaptability. If the rear wheels are suspended in an X shape, the whole shock absorption capacity of the vehicle is weak, the operation part of a driver is comfortable, and the load of the rear wheels is large, so that the service life of the suspension is influenced if the rigid suspension in the X shape is adopted. Meanwhile, the rear wheel is only a driven wheel in the 2-wheel driving mode, the downward pressing of the loading bucket 3 can provide enough downward pressure for the rear wheel when the loading bucket is loaded, and therefore high ground gripping force is obtained, and the effect and the meaning of providing extra ground gripping force by adopting X-shaped suspension are not large.

Example 3

Based on the agricultural vehicle suitable for various road environments in example 2, as shown in fig. 2, an upper backing plate 406 is fixed to the bottom of the open end of each lower V-shaped rigid bracket 401. The upper backing plate 406 is a hollow hard square tube, and is perpendicular to the axial direction of the front wheel axle mechanism 5, the lower end of the upper backing plate is attached to the outer contour of the front wheel axle mechanism 5, and the two ends of the upper backing plate extend to the outside of the front wheel axle mechanism 5. A lower bolster plate 407 is provided below the front axle mechanism 5 at a position corresponding to the upper bolster plate 406. The lower backing plate 407 is a hollow hard square tube, and is perpendicular to the axial direction of the front axle mechanism 5, the top end of the lower backing plate is attached to the outer contour of the front axle mechanism 5, and the two ends of the lower backing plate extend to the outside of the front axle mechanism 5. The fixing plate 408 is sleeved below the lower backing plate 407, the top end of the U-shaped buckle 409 is sleeved on a plate body extending to the outside of the front axle mechanism 5 from the upper backing plate 406, the bottom end of the U-shaped buckle 409 is detachably fixed on the fixing plate 408, and if the lower end of the U-shaped buckle 409 is a threaded column, the U-shaped buckle passes through a through hole correspondingly formed in the fixing plate 408 and then is fastened with a nut in a threaded manner.

Since the X-suspension is a rigid suspension, its main bearing point is on the first horizontal rotating shaft 405. By mounting and fixing the lower V-shaped hard bracket 401 in the above manner, on one hand, a certain buffering force can be provided by the hollow structure of the upper pad plate 406 and the lower pad plate 407, and the internal stress of the first horizontal rotating shaft 405 during vibration can be reduced. On the other hand, when the lower V-shaped hard bracket 401 needs to be maintained and replaced, the lower V-shaped hard bracket 401 and the front axle mechanism 5 can be quickly and conveniently disassembled/assembled. For example: when the fixing plate 408 is to be detached, the U-shaped buckle 409 is first detached from the fixing plate 408, and at this time, the fixing plate 408, the lower pad plate 407, and the upper pad plate 406 can be detached from the front axle mechanism 5. When mounting is required, the upper pad 406, the lower pad 407, and the fixing plate 408 are mounted and placed at the mounting position. Then, the top end of the U-shaped buckle 409 is buckled on the upper backing plate 406, and the bottom end of the U-shaped buckle is fastened with the fixing plate 408, so that the lower V-shaped hard bracket 401 and the front wheel axle mechanism 5 can be fixed.

Example 4

Based on the agricultural vehicle suitable for various road environments described in embodiment 2, as shown in fig. 4, the vehicle is provided with an oil pressure rotating system. The oil pressure rotating system includes: and a rotation sensor 15 sleeved outside the bottom end of the steering wheel rod 14. The signal output end of the rotation sensor 15 is in signal connection with the control signal input end of the oil pressure push rod 16. The oil pressure push rod 16 comprises a fixed part 1601 and a push rod part 1602, the bottom of the fixed part 1601 is hinged with the frame 1, and the top of the push rod part 1602 is connected with a first cross bar 1703 of the first steering mechanism 17 through a first vertical rotating shaft. The front wheel 6 is fixed on the first hub portion 1707 of the first steering mechanism 17, and the top end of the second cross bar 1704 is connected with one end of the steering link 18 through a second vertical rotating shaft. The other end of the steering link 18 is connected to a third cross bar 1902 of the second steering mechanism 19 via a second vertical rotating shaft. The second hub portion 1905 of the second steering mechanism 19 is fitted with and fixed to the other front wheel 6. The rotation sensor 15 may be formed by a single chip microcomputer in cooperation with an existing steering wheel angle sensor.

As shown in fig. 5, the first steering mechanism 17 includes: the first steering sleeve 1701. The front axle mechanism 5 includes a first bushing 501, and a first driving axle 504 located inside the first bushing 501. The end of the first bushing 501 is located inside the first steering sleeve 1701, is rotatably connected with the first steering sleeve 1701 through the first fixed rotating shaft 502, and is sandwiched with the first steering sleeve 1701 to form a first steering cavity 503. The first driving axle 504 has one end drivingly connected to a first driving axle 1102 and the other end extending into the first steering chamber 503 and fixed to a first driving fork 505 of the first ballfork constant velocity joint. A first passive tine 1705 of the first ballfork constant velocity joint is fixedly connected to a first transfer axle 1706. The first transfer axle 1706 is fixedly connected to the first hub portion 1707 through a first steering sleeve 1701. A shaft cover 1702 is fixed to the top end of the first steering sleeve 1701 by a screw. The shaft cover 1702 is provided with a first cross bar 1703 in the horizontal direction.

As shown in fig. 6, the second steering mechanism 19 includes: a second steering sleeve 1901. The front axle mechanism 5 comprises a first shaft sleeve 501 and a second driving axle 507 positioned inside the first shaft sleeve 501. The other end of the first shaft sleeve 501 is located inside the second steering sleeve 1901, is rotatably connected with the second steering sleeve 1901 through a second fixed rotating shaft 509, and is sandwiched between the second steering sleeve 1901 to form a second steering cavity 506. One end of the second driving axle 507 is drivingly connected to the first driving axle 1102, and the other end extends into the second steering chamber 506 and is fixed to the second driving fork 508 of the second ballfork constant velocity universal joint. The second passive fork 1903 of the second bulb-fork type constant velocity joint is fixedly connected to the second transfer axle 1904. The second transfer axle 1904 is fixedly coupled to the second hub portion 1905 through a second steering sleeve 1901.

At this time, when the driver operates the steering wheel, the steering wheel 14 is driven to rotate synchronously, so that the rotation sensor 15 senses the rotation of the steering wheel 14 and generates a control signal. After the control signal is sent to the hydraulic push rod 16, the hydraulic push rod 16 controls the push rod part 1602 to perform an extending or retracting motion based on the control signal, and further drives the front wheel 6 on the first steering mechanism 17 side to rotate sequentially through the first cross bar 1703, and drives the other front wheel 6 on the second steering mechanism 19 side to rotate synchronously through the second cross bar 1704 and the steering link 18.

Specifically, the method comprises the following steps: when the oil hydraulic pushrod 16 is mounted on the left side of the cab, the oil hydraulic pushrod 16 receives the extension control command and controls the pushrod portion 1602 to perform the extension movement. The extending motion of the pushing rod portion 1602 drives the first cross bar 1703 rotatably connected to the top end thereof to rotate counterclockwise, and further drives the first steering sleeve 1701 to rotate counterclockwise synchronously along the first fixed rotating shaft 502 through the shaft cover 1702. The first driving wheel shaft 1706 is driven to rotate counterclockwise by the counterclockwise rotation of the first steering sleeve 1701, and thus the first boss portion 1707 connected to the first driving wheel shaft 1706 is driven to rotate counterclockwise, so that the front wheel 6, which is fitted over and fixed to the first boss portion 1707, is rotated counterclockwise. The first steering sleeve 1701 simultaneously rotates counterclockwise and drives the second cross rod 1704 to rotate counterclockwise synchronously, so as to drive the steering link 18 rotatably connected to the second cross rod 1704 to displace leftward, and further drive the second steering sleeve 1901 to rotate counterclockwise along the second fixed rotating shaft 509 through the third cross rod 1902 of the second steering mechanism 19 rotatably connected to the steering link 18. The counterclockwise rotation of the second steering sleeve 1901 will drive the second hub portion 1905 connected to the second transmission axle 1904 to rotate counterclockwise, so that the front wheel 6 sleeved and fixed on the second hub portion 1905 rotates counterclockwise. The simultaneous counterclockwise rotation of the two front wheels 6 allows left-hand steering of the moving vehicle. The driving axle and the transmission axle are connected by adopting the ball-and-fork type constant velocity universal joint, which is a conventional mechanism in the existing front wheel driving/steering vehicle, and when the wheels rotate, the driving axle can drive the transmission axle to rotate so as to provide power.

Example 5

Based on the agricultural vehicle suitable for various road environments in embodiment 2, as shown in fig. 7, a circular ring sleeve 1603 is arranged at the bottom end of a fixing portion 1601 of the oil pressure push rod 16 along the horizontal direction, and a fixing base 102 is sleeved outside the circular ring sleeve 1603. The fixed base 102 is fixed at the bottom of the frame 1. The fixed base 102 is provided with a fixed shaft 104 passing through the annular sleeve 1603 at the annular sleeve 1603. The diameter of the inner circle of the ring sleeve 1603 is 1-5mm larger than the diameter of the fixed shaft 104, the size of a specific gap is determined by the bearing capacity of the carrier, and the larger the bearing capacity is, the larger the gap is. When the front wheel vibrates or moves up and down, the push rod part 1602 of the hydraulic push rod 16 is in relatively rigid rotary connection with the front wheel, so that the push rod part 1602 of the hydraulic push rod 16 can move up and down with small amplitude along with the front wheel, at the moment, after the fixed part 1601 adopts the structure, when the fixed part 1601 moves up and down, a gap is formed between the annular sleeve 1603 and the fixed shaft 104, so that a buffer gap can be formed between the annular sleeve 1603 and the fixed shaft 104 when the fixed part 1601 moves up and down with small amplitude, and the service life of the fixed shaft 104 is effectively guaranteed. If the ring 1603 is matched with the fixed shaft 104, a large bending stress is applied to the fixed shaft 104 when the fixed part 1601 moves up and down in a small range, which easily causes the ring 1603 and the fixed shaft 104 to break or bend under the action of the bending stress.

Example 6

According to the agricultural vehicle suitable for various road environments in example 1, as shown in fig. 8, the tail gas discharge pipe end of the engine is provided with a silencer 12. The muffler 12 includes: an intake pipe 1201 communicating with the exhaust pipe. The tail end of the air inlet pipe 1201 is hermetically provided with an outer sleeve 1202, and a buffer cavity 1203 is arranged between the outer wall of the air inlet pipe 1201 and the inner wall of the outer sleeve 1202. The air inlet pipe 1201 is arranged in a partial matrix in the outer sleeve 1202 and has more than 2 through holes 1204. An air outlet pipe 1205 is arranged on the outer wall of the outer sleeve 1202 on the opposite side of the air inlet pipe 1201. The outlet pipe 1205 is communicated with the buffer cavity 1203. At this time, when the exhaust gas travels to the end of the exhaust pipe, the exhaust gas enters the inlet pipe 1201, enters the buffer cavity 1203 through the through hole 1204, and is finally discharged from the outlet pipe 1205. Because the buffer cavity 1203 decelerates and buffers the discharged tail gas, the noise generated during the tail gas discharge is very small, thereby reducing the noise generated during the operation of the carrier.

Finally, it should be understood that the above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way. The above disclosed embodiments and technical content can be utilized by any person skilled in the art to make many possible variations, simple substitutions and the like without departing from the scope of the present invention, which is within the protection scope of the present invention.

Claims (9)

1. An agricultural vehicle suitable for use in a variety of road environments, comprising: a frame (1); a cab (2) is mounted at the top end of the head of the frame (1), and a loading bucket (3) is arranged behind the cab (2); the front bottom end of the frame (1) is fixed with a front wheel axle mechanism (5) through a first suspension mechanism (4); the driving output end of the front wheel shaft mechanism (5) is respectively connected with the front wheels (6); the bottom end of the rear part of the frame (1) is fixed with a rear wheel shaft mechanism (8) through a second suspension mechanism (7); the driving output end of the rear wheel shaft mechanism (8) is respectively connected with a rear wheel (9); a driving system is arranged below the cab (2) in the frame (1); the transfer case is characterized in that the driving system comprises a driving mechanism (10) and a transfer case (11); the drive mechanism (10) comprises: an engine and a gearbox; the output end of the engine is in driving connection with the input end of the gearbox, and the output end of the gearbox is in driving connection with the input end of the transfer case (11); the control unit (1101) of the transfer case (11) is arranged in the driver's cabin (2) and has a first drive output in driving connection with the axle section of the front axle mechanism (5) via a first drive shaft (1102) and a second drive output in driving connection with the axle section of the rear axle mechanism (8) via a second drive shaft (1103).

2. An agricultural vehicle suitable for use in a variety of road environments in accordance with claim 1, wherein the first suspension mechanism (4) comprises: an upper V-shaped hard bracket (403) and a lower V-shaped hard bracket (401); the opening end of the upper V-shaped hard bracket (403) is respectively fixed with the bottom of the frame (1), and the closed end is fixedly connected with the first rotating connecting plate (404); the open end of the lower V-shaped hard bracket (401) is respectively fixed with the bottom of the front wheel axle mechanism (5), and the closed end is fixedly connected with the second rotating connecting plate (402); the first rotating connecting plate (404) and the second rotating connecting plate (402) are rotatably connected through a first horizontal rotating shaft (405).

3. An agricultural vehicle adapted for use in a variety of road environments in accordance with claim 2, wherein an upper pad (406) is fixed to the bottom of the open end of each of said lower V-shaped rigid frames (401); the upper backing plate (406) is a hollow hard square pipe, is perpendicular to the axial direction of the front wheel axle mechanism (5), the lower end of the upper backing plate is attached to the outer contour of the front wheel axle mechanism (5), and the two ends of the upper backing plate extend to the outside of the front wheel axle mechanism (5); a lower backing plate (407) is arranged below the front wheel axle mechanism (5) and at the position corresponding to the upper backing plate (406); the lower backing plate (407) is a hollow hard square tube, is perpendicular to the axial direction of the front wheel axle mechanism (5), the top end of the lower backing plate is attached to the outer contour of the front wheel axle mechanism (5), and the two ends of the lower backing plate extend to the outside of the front wheel axle mechanism (5); the fixing plate (408) is sleeved below the lower backing plate (407), the top end of the U-shaped buckle (409) is sleeved on the plate body, extending to the outside of the front axle mechanism (5), of the upper backing plate (406), and the bottom end of the U-shaped buckle is detachably fixed on the fixing plate (408).

4. An agricultural vehicle adapted for use in a variety of road environments in accordance with claim 1, wherein the second suspension mechanism (7) is: the bottom end of the steel plate spring is fixed at the top of the shell of the rear wheel shaft mechanism (8), and the top end of the steel plate spring is fixed at the bottom end of the carrying bracket (101); the top end of the carrying support (101) is fixed at the bottom of the frame (1).

5. An agricultural vehicle as defined in claim 1, wherein the vehicle is provided with an oil pressure rotating system; the oil pressure rotating system includes: a rotation sensor (15) sleeved outside the bottom end of the steering wheel rod (14); the signal output end of the rotation sensor (15) is in signal connection with the control signal input end of the oil pressure push rod (16); the oil pressure push rod (16) comprises a fixed part (1601) and a push rod part (1602), the bottom of the fixed part (1601) is hinged with the frame (1), and the top of the push rod part (1602) is connected with a first cross rod (1703) of a first steering mechanism (17) through a first vertical rotating shaft; a front wheel (6) is fixedly sleeved on a first hub part (1707) of the first steering mechanism (17), and the top end of a second cross rod (1704) is connected with one end of a steering connecting rod (18) through a second vertical rotating shaft; the other end of the steering connecting rod (18) is connected with a third cross rod (1902) of a second steering mechanism (19) through a second vertical rotating shaft; and the other front wheel (6) is fixedly sleeved on a second hub part (1905) of the second steering mechanism (19).

6. An agricultural vehicle suitable for use in a variety of road environments in accordance with claim 5, wherein the first steering mechanism (17) comprises: a first steering sleeve (1701); the front axle mechanism (5) comprises a first shaft sleeve (501) and a first driving axle (504) positioned inside the first shaft sleeve (501); the tail end of the first shaft sleeve (501) is positioned in the first steering sleeve (1701), is rotatably connected with the first steering sleeve (1701) through a first fixed rotating shaft (502), and is clamped with the first steering sleeve (1701) to form a first steering cavity (503); one end of the first driving wheel shaft (504) is in driving connection with a first driving shaft (1102), and the other end of the first driving wheel shaft extends into the first steering cavity (503) and is fixed with a first driving fork (505) of the first spherical fork type constant velocity universal joint; a first passive fork (1705) of the first spherical fork type constant velocity universal joint is fixedly connected with a first transmission wheel shaft (1706); the first transfer axle (1706) is fixedly connected to the first hub portion (1707) through a first steering sleeve (1701);

a shaft cover (1702) is fixed at the top end of the first steering sleeve (1701) through a screw; the shaft cover (1702) is provided with a first cross bar (1703) along the horizontal direction.

7. An agricultural vehicle suitable for use in a variety of road environments according to claim 6, characterized in that the second steering mechanism (19) comprises: a second steering sleeve (1901); the front wheel shaft mechanism (5) comprises a first shaft sleeve (501) and a second driving wheel shaft (507) positioned in the first shaft sleeve (501); the other end of the first shaft sleeve (501) is positioned in a second steering sleeve (1901), is rotatably connected with the second steering sleeve (1901) through a second fixed rotating shaft (509), and is clamped with the second steering sleeve (1901) to form a second steering cavity (506); one end of the second driving wheel shaft (507) is in driving connection with the first driving shaft (1102), and the other end of the second driving wheel shaft extends into the second steering cavity (506) and is fixed with a second driving fork (508) of the second ball fork type constant velocity universal joint; a second passive fork (1903) of the second ball-and-fork type constant velocity universal joint is fixedly connected with a second transmission wheel shaft (1904); the second transfer axle (1904) is fixedly connected to the second hub portion (1905) through a second steering sleeve (1901).

8. An agricultural vehicle suitable for various road environments as claimed in claim 5, wherein the bottom end of the fixed part (1601) of the hydraulic push rod (16) is provided with a ring sleeve (1603) along the horizontal direction, and a fixed base (102) is sleeved outside the ring sleeve (1603); the fixed base (102) is fixed at the bottom of the frame (1); the fixed base (102) is provided with a fixed shaft (104) penetrating through the annular sleeve (1603) at the annular sleeve (1603); the diameter of the inner circle aperture of the circular ring sleeve (1603) is 1-5mm larger than that of the fixed shaft (104).

9. An agricultural vehicle adapted for use in a variety of road environments in accordance with claim 1, wherein the engine is terminated in an exhaust pipe with a muffler (12); the muffler (12) includes: an intake pipe (1201) communicating with the exhaust pipe; the tail end of the air inlet pipe (1201) is hermetically provided with an outer sleeve (1202), and a buffer cavity (1203) is arranged between the outer wall of the air inlet pipe (1201) and the inner wall of the outer sleeve (1202); more than 2 through holes (1204) are arranged in a part of the air inlet pipe (1201) positioned in the outer sleeve (1202) in a matrix manner; an air outlet pipe (1205) is arranged on the outer wall of the outer sleeve (1202) at the opposite side of the air inlet pipe (1201); the air outlet pipe (1205) is communicated with the buffer cavity (1203).

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