CN216805689U

CN216805689U - All-terrain vehicle

Info

Publication number: CN216805689U
Application number: CN202220259407.6U
Authority: CN
Inventors: 朱佳瑶; 张彪; 孔蕊蕊
Original assignee: Zhejiang CFMOTO Power Co Ltd
Current assignee: Zhejiang CFMOTO Power Co Ltd
Priority date: 2022-01-25
Filing date: 2022-01-25
Publication date: 2022-06-24
Anticipated expiration: 2032-01-25

Abstract

The utility model discloses an all-terrain vehicle, comprising: a frame; a body cover at least partially disposed on the frame; the power system comprises an engine and is used for driving the walking assembly; the speed change assembly is arranged between the power system and the walking assembly and is used for transmitting the power of the power system to the walking assembly; the all-terrain vehicle also comprises an exhaust system, wherein the exhaust system comprises a silencer and a tail gas pipe, and the tail gas pipe is arranged on the lower side of the silencer; the length of the silencer is H, the connecting position of the tail gas pipe and the silencer is a first connecting position, the distance between the first connecting position and the tail end of the silencer is H, and the ratio of H to H is more than or equal to 0.1 and less than or equal to 0.2. The utility model has the beneficial effects that: the exhaust pipe can be arranged on the lower side of the silencer, so that the longitudinal length of the exhaust pipe can be increased, and the volume of the silencer is increased; and the temperature influence of the discharged gas on other parts of the all-terrain vehicle can be reduced.

Description

All-terrain vehicle

Technical Field

The utility model relates to the field of vehicles, in particular to an all-terrain vehicle.

Background

On existing atvs, mufflers are mainly used to reduce the noise generated when the engine of the atv is operated, and generally, the mufflers are disposed at the rear side of the atv. The rear exhaust silencer is limited by the total length of the all-terrain vehicle, and the practical volume of the rear exhaust silencer is small, so that the rear exhaust silencer is not beneficial to exhaust and silencing of the silencer. In addition, the exhaust gas discharged by the rear exhaust muffler has higher temperature, and is easy to influence plastic parts at the rear part of the all-terrain vehicle, such as softening and deforming the plastic parts.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems that the practical volume of the silencer is small and the plastic part at the rear part of the all-terrain vehicle is easily affected, the utility model provides the all-terrain vehicle, which comprises: a frame; a body cover disposed at least partially over the frame; the walking assembly comprises a first walking wheel and a second walking wheel; the suspension assembly comprises a front suspension and a rear suspension, the first travelling wheel is connected to the frame through the front suspension, and the second travelling wheel is connected to the frame through the rear suspension; the power system comprises an engine and is used for driving the walking assembly; the speed change assembly is arranged between the power system and the walking assembly and is used for transmitting the power of the power system to the walking assembly; the all-terrain vehicle also comprises an exhaust system, wherein the exhaust system comprises a silencer and a tail gas pipe, and the tail gas pipe is arranged on the lower side of the silencer; the length of the silencer is H, the connecting position of the tail gas pipe and the silencer is a first connecting position, the distance between the first connecting position and the tail end of the silencer is H, and the ratio of H to H is more than or equal to 0.1 and less than or equal to 0.2.

Further, the exhaust pipe is communicated with the silencer.

Further, the tail gas pipe is of a bent structure.

Further, the exhaust system further comprises an exhaust pipe which connects the muffler and the engine.

Further, the tail end of the silencer is provided with a heat shield.

Further, the heat shield includes a decorative layer and a thermal insulating layer disposed between the decorative layer and the muffler.

Further, the thickness of insulating layer is greater than the thickness of decorative layer.

Further, the ratio of the thickness of the heat insulation layer to the thickness of the decoration layer is greater than or equal to 2.

Further, the diameter of the heat insulation layer is larger than that of the tail end of the silencer; the diameter of the decorative layer is larger than that of the heat insulation layer.

Further, the exhaust pipe and the muffler extend substantially in the fore-and-aft direction of the all-terrain vehicle.

Compared with the prior art, the all-terrain vehicle provided by the utility model has the advantages that the tail gas pipe is arranged at the lower side of the silencer, and compared with the arrangement mode that the tail gas pipe is connected to the tail end of the silencer, the longitudinal length of the tail gas pipe can be increased, so that the volume of the silencer is increased; and the temperature influence of the discharged gas on other parts of the all-terrain vehicle can be reduced.

Drawings

Fig. 1 is a schematic structural view of an all-terrain vehicle of the present invention.

Fig. 2 is a schematic side view of an all-terrain vehicle of the present invention.

FIG. 3 is a schematic structural diagram of the powertrain system and transmission assembly of the present invention.

Fig. 4 is a schematic structural view of the vehicle frame of the present invention.

Figure 5 is a schematic diagram of the exhaust system of the present invention,

FIG. 6 is a schematic view of the muffler and heat shield of the present invention.

Fig. 7 is a schematic structural view of a vehicle body cover of the present invention.

Fig. 8 is a schematic structural view of an intake system of the present invention.

Fig. 9 is a side view schematically showing the structure of the cooling system of the present invention.

Fig. 10 is a partial structural schematic view of the cooling system of the present invention.

Fig. 11 is a schematic structural view of the adaptor bracket of the present invention.

Fig. 12 is a schematic structural view of the adapter bracket and the water pipe clamp of the utility model.

Fig. 13 is a partial structural schematic view of the cooling system of the present invention mounted on a vehicle frame.

Fig. 14 is a schematic structural view of the water pipe clamp of the utility model.

Detailed Description

In order to make the technical solution of the present invention better understood, the technical solution of the present invention in the specific embodiment will be clearly and completely described below with reference to the attached drawings in the embodiment of the present invention.

As shown in fig. 1 and 2, atv 100 includes a frame 12, a fuel system 13, a steering assembly 16, an electrical system 17, an exhaust system 18, a steering assembly 22, a body cover 23, a mounting bracket assembly 24, an air intake system 25, a walking assembly 26, a suspension assembly 27, and a saddle assembly 28. The frame 12 is configured to support the steering assembly 16, the exhaust system 18, and the body cover 23, and the mounting bracket assembly 24 is mounted to the frame 12. Steering assembly 16 controls the rotation of traveling assembly 26, exhaust system 18 is configured to exhaust gases generated during operation of ATV 100 to the environment, steering assembly 22 is disposed on frame 12, and steering assembly 22 is coupled to body cover 23, and suspension assembly 27 is configured to couple traveling assembly 26 to frame 12. For clearly explaining the technical scheme of the utility model, the front side, the rear side, the left side, the right side, the upper side and the lower side shown in figure 1 are also defined.

As shown in FIG. 2, the travel assembly 26 includes a first road wheel 261 and a second road wheel 262, the first road wheel 261 and/or the second road wheel 262 both being the drive wheels of the ATV 100, and the first road wheel 261 being coupled to the steering assembly 16 for rotation. The suspension assembly 27 includes a front suspension 271 and a rear suspension 272 (see fig. 1), the first road wheel 261 being connected to the frame 12 by the front suspension 271, and the second road wheel 262 being connected to the frame 12 by the rear suspension 272.

As shown in fig. 3, atv 100 further includes a power system 11 and a transmission assembly 14, with power system 11 being disposed on frame 12 for providing power to atv 100. Power system 11 includes an engine 111, engine 111 coupled to a transmission assembly 14, transmission assembly 14 capable of varying the propulsion power and travel speed of ATV 100. The engine 111 includes at least one cylinder 1111 and a head 1112 located at one end of the cylinder 1111, with a combustion chamber and piston assembly located within the cylinder 1111, the combustion chamber being connected to the intake system 25. The engine 111 is provided on the frame 12. In the present embodiment, the Transmission assembly 14 is a CVT Transmission, and it is understood that the Transmission assembly 14 may be other transmissions such as an AT automatic Transmission (automatic Transmission), a DCT Dual Clutch Transmission (Dual Clutch Transmission), and the like.

As shown in fig. 4, the frame 12 is a metal frame, and includes a frame main body 121 and a front support bracket 122, the frame main body 121 includes a first main beam 1211, a second main beam 1212, a third main beam 1213, a fourth main beam 1214, a fifth main beam 1215, a sixth main beam 1216, a seventh main beam 1217, an eighth main beam 1218, and a ninth main beam 1219, the frame main body 121 can be made by welding, the front support bracket 122 is disposed at the front side of the frame main body 121 in the front-rear direction, and the front support bracket 122 serves as an extension of the frame 12, so that the length of the entire frame 12 can be extended, and the frame 12 can be assembled with more devices.

As shown in fig. 5, the exhaust system 18 includes an exhaust pipe 181 and a muffler 182, and the exhaust system 18 is configured to discharge gas output through the power system 11, and the gas enters the muffler 182 through the exhaust pipe 181 and is discharged to the outside air through the muffler 182. Exhaust pipe 181 and muffler 182 extend substantially in the fore-aft direction of ATV 100. A muffler 182 is provided at the rear of atv 100, muffler 182 being connected to engine 111 via exhaust pipe 181. The muffler 182 is provided with a heat shield 183 and an exhaust pipe 184, and the gas enters the muffler 182 through the exhaust pipe 181, is treated by the muffler 182 for noise, and is finally discharged to the outside air through the exhaust pipe 184. In one implementation, the exhaust pipe 184 is a bent structure, the exhaust pipe 184 is disposed on the outer peripheral wall of the muffler 182, and the exhaust pipe 184 is communicated with the muffler 182. The tailpipe 184 is disposed on the lower side of the muffler 182, which increases the longitudinal length of the tailpipe 184 and thus the volume of the muffler 182, compared to the arrangement in which the tailpipe 184 is connected to the rear end of the muffler 182. The connecting position of the tail gas pipe 184 and the silencer 182 is a first connecting position, the distance between the first connecting position and the tail end of the silencer 182 is H, the ratio of the distance H to the total length H of the silencer 182 is more than or equal to 0.1 and less than or equal to 0.2, the gas which is fully silenced by the silencer 182 can be received by the arrangement mode, a space can be vacated for the installation of other parts of the all-terrain vehicle 100, and the temperature influence of the exhausted gas on other parts of the all-terrain vehicle 100 is reduced.

As shown in fig. 6, as an implementation, the heat shield 183 is disposed at an end of the muffler 182 away from the exhaust pipe 181, the heat shield 183 includes a decoration layer 1831 and a heat insulating layer 1832, the decoration layer 1831 can be in contact with outside air, the heat insulating layer 1832 is disposed between the decoration layer 1831 and the muffler 182, and the heat insulating layer 1832 can insulate heat conducted by the muffler 182. It will be appreciated that insulative layer 1832 has a thickness greater than the thickness of decorative layer 1831 in the fore-aft direction of atv 100 in order to isolate as much heat as possible from muffler 182. Specifically, the thermal insulation layer 1832 may be made of a composite material, which has a better thermal insulation effect compared with a conventional metal material. Along the front-back direction of atv 100, the ratio of the thickness of thermal insulating layer 1832 to the thickness of decorative layer 1831 is greater than or equal to 2, and this arrangement means that the thickness of thermal insulating layer 1832 is at least 2 times the thickness of decorative layer 1831, which can reduce the difficulty in manufacturing and assembling materials while ensuring a certain thermal insulating effect. The cross sections of the muffler 182 and the heat shield 183 are circular, the diameter of the heat insulation layer 1832 is larger than that of the tail end of the muffler 182, and the diameter of the decoration layer 1831 is larger than that of the heat insulation layer 1832. It is understood that the heat shield 183 may be other shapes with the inner diameter of the insulation layer 1832 being greater than the diameter of the muffler 182 and the inner diameter of the decorative layer 1831 being greater than the inner diameter of the insulation layer 1832.

As shown in fig. 7, the intake system 25 is used to deliver clean, dry, sufficient and stable air to the engine 111, and the intake system 25 includes an intake 251 and an intake pipe 252. The vehicle body cover 23 includes an instrument cover 23 b. The air inlet 251 is provided at least partially on the meter cover 23 b. Instrument cover 23b is provided with a windward side 23ba in the traveling direction of atv 100. The all-terrain vehicle 100 comprises a first projection plane 304 perpendicular to the up-down direction of the all-terrain vehicle 100 and a second projection plane 305 perpendicular to the left-right direction of the all-terrain vehicle 100, and the first projection plane 304 and the second projection plane 305 are arranged perpendicular to each other. The windward side 23ba is substantially perpendicular to the second plane of projection 305. Along the left-right direction of the all-terrain vehicle 100, the projection of the windward side 23ba on the second projection surface 305 is a first projection line, and the projection of the first projection surface 304 on the second projection surface 305 is a second projection line. In the present embodiment, the angle M between the first projection line and the second projection line is 45 ° or more and 90 ° or less. Through the arrangement, the length of the instrument cover 23b in the front-back direction of the all-terrain vehicle 100 can be reduced, so that the length of the instrument cover 23b in the front-back direction is reduced, the structure of the all-terrain vehicle 100 is more compact, the space utilization rate of the all-terrain vehicle 100 is improved, and the driving operability of the all-terrain vehicle 100 is improved.

Specifically, an included angle M between the first projection line and the second projection line is 50 ° or more and 80 ° or less. Through the arrangement, the length of the instrument cover 23b in the front-back direction of the all-terrain vehicle 100 can be reduced, so that the length of the instrument cover 23b in the front-back direction is reduced, the structure of the all-terrain vehicle 100 is more compact, the space utilization rate of the all-terrain vehicle 100 is improved, and the driving operability of the all-terrain vehicle 100 is improved.

The windward side 23ba of the meter cover 23b is provided with at least one air inlet 251. In the present embodiment, the meter cover 23b is provided with a plurality of shielding pieces 23bb to divide the windward surface 23ba into a plurality of air inlets 251. Ambient air enters the inside of the meter cover 23b through the air inlet 251, thereby flowing toward the air inlet pipe 252. The air inlet duct 252 is connected to the transmission assembly 14 to allow ambient air to enter the transmission assembly 14 to reduce the internal temperature of the transmission assembly 14. Specifically, the shielding sheet 23bb is substantially perpendicular to the second projection plane 305. The projection of the shielding sheet on the second projection surface 305 is a third projection line along the left and right directions of the all-terrain vehicle 100. An included angle N between the second projection line and the third projection line is greater than or equal to 9 degrees and less than or equal to 11 degrees. Through the arrangement, the air quantity entering the instrument cover 23b can meet the requirement, liquid such as water can be prevented from flowing to the rear side of the instrument cover 23b, the liquid such as water is prevented from entering the inside of the instrument cover 23b, and therefore the heat dissipation effect and the service life of the all-terrain vehicle 100 are improved.

In the present embodiment, the angle N between the second projection line and the third projection line is 10 °. In this case, the amount of air entering meter cover 23b can be made as required, and liquid such as water can be prevented from flowing to the rear side of meter cover 23b, thereby preventing liquid such as water from entering the inside of meter cover 23b, and improving the heat dissipation effect and the service life of atv 100.

As one implementation, the windward side 23ba includes a left windward side and a right windward side. The left windward side is provided with at least one air inlet 251 and at least one shielding piece 23bb, and the right windward side is provided with at least one air inlet 251 and at least one shielding piece 23 bb. Specifically, the number of the air inlets 251 arranged on the left windward side and the right windward side can be the same, and the number of the air inlets 251 arranged on the left windward side and the right windward side can also be different, so that the air inlets can be adjusted according to requirements. The shielding pieces 23bb arranged on the left windward side and the right windward side can be the same in quantity, and the air inlets 251 arranged on the left windward side and the right windward side can be different in quantity and can be adjusted according to requirements. Through the arrangement, the air quantity entering the instrument cover 23b can meet the requirement, liquid such as water can be prevented from flowing to the rear side of the instrument cover 23b, the liquid such as water is prevented from entering the inside of the instrument cover 23b, and therefore the heat dissipation effect and the service life of the all-terrain vehicle 100 are improved.

As shown in fig. 8, the intake pipe 252 includes a first intake pipe 2521, a connection member 2522, and a second intake pipe 2523, and the connection member 2522 includes a first connection portion 2522a and a second connection portion 2522b, as one implementation. The first connection portion 2522a is disposed between the first intake pipe 2521 and the second intake pipe 2523, and the first connection portion 2522a is used to connect the first intake pipe 2521 and the second intake pipe 2523. One end of the first intake pipe 2521 is connected to the meter cover 23b, and the other end of the first intake pipe 2521 is connected to the first connection portion 2522 a. One end of the second air inlet pipe 2523 is connected to the first connecting portion 2522a, the second connecting portion 2522b is disposed between the second air inlet pipe 2523 and the transmission assembly 14, the other end of the second air inlet pipe 2523 is connected to the second connecting portion 2522b, and one end of the second connecting portion 2522b remote from the second air inlet pipe 2523 is connected to the transmission assembly 14. The first connection portion 2522a and the second connection portion 2522b are both hollow ring-shaped structures, and ambient air enters the meter housing 23b from the air inlet 251, is introduced into the second air inlet tube 2523 through the first air inlet tube 2521, and is introduced into the transmission assembly 14 from the second air inlet tube 2523. As one implementation, the first air inlet pipe 2521 is connected to the ninth main beam 1219 by a bolt, the second air inlet pipe 2523 includes a first passage 2523a and a second passage 2523b, one end of the first passage 2523a is connected to the first connection portion 2522a, and the other end of the first passage 2523a is connected to the second connection portion 2522 b. The second channel 2523b is disposed around the ninth main beam 1219, one end of the second channel 2523b is connected to the first connection 2522a from one side of the first connection 2522a, and one end of the second channel 2523b away from the first connection 2522a is connected to the first channel 2523a, wherein the inner diameter of the second channel 2523b is smaller than the inner diameter of the first channel 2523 a. In this embodiment, the connecting member 2522 may be made of an elastic material. Specifically, the connecting member 2522 may be made of a rubber material, and the elastic variable of the rubber material may absorb the swinging force of the air intake pipe 252 during the driving or movement of the atv 100, so as to reduce the swinging of the air intake pipe 252, and further reduce the friction loss of the air intake pipe 252. An anchor ear is also provided on the exterior of the coupler 2522 for further securing the above-described coupling. The meter cover 23b can introduce ambient air into the vehicle body interior and into the transmission 14 through the intake duct 252, effectively reducing the internal temperature of the transmission 14. The intake pipe 252 utilizes the design of the bifurcated intake pipeline, increases the intake area of the intake pipeline, effectively increases the intake volume of the intake pipe 252, solves the problem of insufficient intake volume, greatly improves the intake efficiency, obtains better heat dissipation effect, and simultaneously makes full use of the internal space of the all-terrain vehicle 100, and improves the space utilization rate.

As shown in fig. 9-11, atv 100 further includes a cooling system 19, where cooling system 19 is capable of transferring heat from the interior of atv 100 to the ambient air in a timely manner such that atv 100 operates at an optimum temperature. As one implementation, cooling system 19 includes a radiator 191, a water tank 192, a fan breather tube 193, and a water clamp 194. The air inlet surface and the air exhaust surface are correspondingly arranged on the radiator 191 in the air inlet and air exhaust directions of the radiator 191, namely the air inlet direction of the radiator 191 corresponds to the air inlet surface, and the air exhaust direction of the radiator 191 corresponds to the air exhaust surface. The radiator 191 is provided with a diversion cover 195, and the diversion cover 195 is used for preventing hot air exhausted from the air exhaust surface of the radiator 191 from being sucked back to the air inlet surface. The air guide cover 195 is arranged between the radiator 191 and the vehicle body covering part 23, the air guide cover 195 is installed on the radiator 191 through bolts, the air guide cover 195 is arranged around the air inlet surface, an air guide cavity can be formed between the radiator 191 and the vehicle body covering part 23, and the ambient air introduced from the vehicle body covering part 23 basically flows to the air inlet surface along the air guide cavity. It can be understood that the arrangement can effectively improve the air inlet efficiency of the air guide sleeve 195, effectively block the backflow hot air, greatly improve the heat dissipation effect of the heat sink 191, and reduce the temperature of the inside of the all-terrain vehicle 100 and the area around the heat sink 191.

As shown in fig. 11, an adapter bracket 196 is provided on a side surface of the radiator 191, and the adapter bracket 196 is used to mount the water tank 192. Wherein, the side of the radiator 191 refers to the surface perpendicular to the air intake surface and the air exhaust surface and located at both sides of the radiator 191. As one implementation, the water tank 192 is bolted to the adaptor bracket 196, which allows the water tank 192 to be easily removed and installed and replaced.

As shown in fig. 11 and 12, the adaptor bracket 196 includes a bottom plate 1961 and a side plate 1962, and the bottom plate 1961 and the side plate 1962 are fixedly coupled. The bottom plate 1961 is arranged perpendicular to the air exhaust surface, the bottom plate 1961 is connected with the water tank 192 through bolts, the side plate 1962 extends and surrounds to one side of the radiator 191 along the air exhaust surface of the radiator 191, one end of the side plate 1962 is turned over to form a turned edge parallel to the bottom plate 1961, and the adapter bracket 196 is fixed on the radiator 191 through the turned edge. Specifically, the side plate 1962 extends and surrounds along the discharge surface of the heat sink 191, and the side plate 1962 is connected to one side of the heat sink 191.

As one implementation, the adaptor bracket 196 is fixed to one side of the heat sink 191 by welding, and the bottom plate 1961 and the side plate 1962 may be integrally formed. Compared with the auxiliary water tank installation in the prior art, the water tank 192 can be integrally installed on the radiator 191 through the adapter bracket 196 in the embodiment, the adapter bracket 196 solves the installation difficulty of the water tank 192, the installation space of the water tank 192 is saved, and the assembly labor cost and the material cost are reduced.

As shown in fig. 13, the fan duct 193 is used to discharge hot air from the radiator 191 to help the radiator 191 radiate heat, the fan duct 193 is disposed behind the radiator 191, the fan duct 193 is connected to the front support frame 122 to allow the exhaust air passage to be connected to the front support frame 122, and the hot air is guided to the outside of the all terrain vehicle 100 by the front support frame 122. The exhaust air path refers to a moving track of the front support frame 122 to which the hot air exhausted by the fan vent 193 is exhausted. Since the diameter of the fan vent pipe 193 is small, the fan vent pipe 193 is easily clogged by water or sand, and thus, it is particularly important for the installation position and the exhaust direction of the fan vent pipe 193.

As one implementation, the fan vent tube 193 is mounted on the front support frame 122 through the connector 1931, the connector 1931 has a hollow structure, one end of the connector 1931 is connected to the front support frame 122, and the other end of the connector 1931 is in interference fit with the fan vent tube 193, so that hot air inside the radiator 191 can be introduced into the front support frame 122, and the air is exhausted to the outside environment through the vent holes and/or the lightening holes arranged on the front support frame 122, without considering the arrangement of the exhaust air path of the fan vent tube 193. The installation problem of fan breather pipe 193 can be solved in this kind of setting, through more reasonable fan breather pipe 193 of arranging, can effectively avoid silt, water etc. to get into fan breather pipe 193 and influence radiator 191 performance when reducing installation cost.

As shown in fig. 14, the water pipe of the radiator 191 is fixed on the frame 12 through the water pipe clamp 194, the water pipe clamp 194 is provided with an installation space for fixing the water pipe, the cross section of the installation space is substantially circular, and the diameter of the cross section of the installation space is smaller than that of the water pipe, so that the water pipe clamp 194 is in interference fit with the water pipe, and the water pipe clamp 194 and the water pipe are fixed. Be provided with spacing post 1941 on the outer wall of water pipe clamp 194, the symmetry sets up at least a pair of spacing piece 1942 on the spacing post 1941, spacing post 1941 is connected with frame 12, make water pipe clamp 194 install on frame 12, spacing piece 1942 plays the guide effect when the installation, can make things convenient for water pipe clamp 194 to install on frame 12, water pipe clamp 194 is through spacing piece 1942 and frame 12 joint, thereby make spacing post 1941 unable removal, spacing piece 1942 can prevent that water pipe clamp 194 from droing, has fine fixed effect, the plane of spacing post 1941 periphery and the contained angle of spacing piece 1942 are greater than 0 and are less than or equal to 90. The limiting columns 1941 are symmetrically provided with a plurality of pairs of limiting sheets 1942, and the limiting columns 1941 have a better non-return effect due to the arrangement, so that the connection between the water pipe clamp 194 and the frame 12 is more stable and reliable. The water pipe clamp 194 is further provided with an opening connected to the installation space, the two sides of the opening are provided with flanging structures 1943 formed by folding, when manual installation is facilitated through the flanging structures 1943, the opening of the water pipe clamp 194 is enlarged, and an assembly worker can conveniently connect the water pipe with the water pipe clamp 194. As an implementation mode, corresponding to the installation position of the water pipe clamp 194, a sheath can be arranged on the water pipe, the outer diameter of the sheath needs to be larger than the diameter of the installation space, the sheath is fixedly matched with the water pipe clamp 194, abrasion of the water pipe is reduced, meanwhile, the sheath has the identification function of the installation position, and during installation, only whether the position of the sheath corresponds to the water pipe clamp 194 or not needs to be determined, and whether errors occur in installation of the water pipe can be determined. The jacket can be made of polyethylene material and is arranged on the water pipe through a heat shrinkage process. The hose clamp 194 may be plastic. The water pipe is fixed through the water pipe clamp 194, the manual assembly cost is effectively reduced, the assembly difficulty is reduced, and meanwhile, the water pipe clamp 194 can be made of plastics, so that the cost control is facilitated.

It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the utility model as defined in the appended claims.

Claims

1. An all-terrain vehicle comprising:

a frame;

a body cover disposed at least partially over the frame;

the walking assembly comprises a first walking wheel and a second walking wheel;

a suspension assembly including a front suspension through which the first road wheel is connected to the frame and a rear suspension through which the second road wheel is connected to the frame;

a power system including an engine and configured to drive the walking assembly;

the speed change assembly is arranged between the power system and the walking assembly and is used for transmitting the power of the power system to the walking assembly;

characterized in that the all-terrain vehicle further comprises an exhaust system,

the exhaust system comprises a silencer and an exhaust pipe, and the exhaust pipe is arranged on the lower side of the silencer;

the length of the silencer is H, the connecting position of the tail gas pipe and the silencer is a first connecting position, the distance between the first connecting position and the tail end of the silencer is H, and the ratio of H to H is more than or equal to 0.1 and less than or equal to 0.2.

2. The all-terrain vehicle of claim 1, characterized in that the tail gas pipe is in communication with the muffler.

3. The all-terrain vehicle of claim 2, characterized in that the tail gas pipe is of a curved configuration.

4. The all-terrain vehicle of claim 1, characterized in that the exhaust system further comprises an exhaust pipe connecting the muffler and the engine.

5. The all-terrain vehicle of claim 1, characterized in that a heat shield is provided at a trailing end of the muffler.

6. The all-terrain vehicle of claim 5, characterized in that the heat shield comprises a decorative layer and an insulative layer disposed between the decorative layer and the muffler.

7. The all-terrain vehicle of claim 6, characterized in that the thickness of the insulative layer is greater than the thickness of the decorative layer.

8. The all-terrain vehicle of claim 7, characterized in that the ratio of the thickness of the insulative layer to the thickness of the decorative layer is greater than or equal to 2.

9. The all-terrain vehicle of claim 6, characterized in that the diameter of the insulative layer is greater than the diameter of the trailing end of the muffler; the diameter of the decorative layer is larger than that of the heat insulation layer.

10. The all-terrain vehicle of claim 4, characterized in that the exhaust pipe and the muffler extend substantially in a fore-aft direction of the all-terrain vehicle.