WO2008106830A1

WO2008106830A1 - Sand off-road vehicle

Info

Publication number: WO2008106830A1
Application number: PCT/CN2007/000869
Authority: WO
Inventors: Jiansheng Chen
Original assignee: Jiansheng Chen
Priority date: 2007-03-02
Filing date: 2007-03-16
Publication date: 2008-09-12
Also published as: CN101016062A; CN100448733C

Abstract

A sand off-road vehicle is mainly composed of a steering system (20), a brake system (30), a transmission system (50), a drive system (70), an electrical system (80), a frame (10), wheels (90) and so on. It also includes a two-wheel or four-wheel independent suspension (60) that includes front suspensions and rear suspensions. The frame (10) is mounted on wheels via the suspension (60). The transmission system (50) is located at the rearward of the frame (10), and its two transmission quadrate beams are fixed on inner sides of wheels (90). The drive system (70) is located at the rearward of the frame (10), and the power of its engine is transferred to the transmission system (50) through a drive pulley, a transmitted belt (508) and a driven pulley, or the engine is connected to the drive pulley via a middle transmission, and then the power is transferred to the transmission system (50) through a drive pulley, a transmitted belt (508) and a driven pulley.

Description

Beach mountain bike

Technical field

The invention relates to a vehicle structure, in particular to a beach mountain bike which integrates sports, leisure and entertainment or engages in special operations in the field. Background technique

The all-terrain vehicle is the translation of All Terrain Vehicle (abbreviated as ATV). It is often called "ATV" in China. Because its structure is very similar to that of motorcycles, and many parts are common with motorcycles, it is also called " Four-wheeled motorcycle". It is used in a wide range of applications including agriculture, tourism, grazing, forestry, exploration, geological exploration, fire protection, hunting and military. Because it is not restricted by road conditions, it is in the United States, Canada, Spain, Australia, etc. The country is widely used and is on the rise year by year. According to the statistics of the Motorcycle Industry Council, the global ATV market is about 1 million units, 80% of which comes from the United States, and the market prospect is very broad.

Because China is a big country in motorcycle production, there are many industries, and the ability to produce and transform is huge. The competition among enterprises is also intensifying, resulting in lower and lower profits. Therefore, in the case of the international ATV market is very promising, the domestic major motorcycles Manufacturers have switched to ATV to export foreign exchange. According to statistics from relevant parties, there are more than 400 ATV manufacturers in China, including professional ATV manufacturers, and many of them are motorcycle manufacturers using existing equipment and personnel for production. The scale of enterprises is large and small, and the quality of products is also uneven. Since the existing ATV manufacturers are especially converted from motorcycle manufacturers, the ATVs produced are basically similar in appearance to motorcycles, and some parts are also the same as motorcycles. Therefore, there are still many ATV performance and structure. Defects and deficiencies, such as high product center of gravity, the driver needs to adjust his or her center of gravity to maintain the balance of the vehicle during driving, which is prone to rollover accidents and lack of safety; some products have a single performance, only Adapt to driving on mountain roads, or only on mud and beach, and have poor passability; some products are not stable enough in dynamic performance, and the ability to cross-country climbing is not strong; some products are complex in structure, not aesthetically pleasing, and similar in appearance; Some products have high failure rate, short service life, etc., which ultimately leads to a decline in the market competitiveness of products, which seriously restricts the development of ATV manufacturers. Summary of the invention The technical problem to be solved by the present invention is to provide a new type of beach mountain bike that travels on various complicated terrains such as beaches, mountain roads, grasslands, mud, snow, and bushes, or engages in special operations in the field.

In order to achieve the above object, the technical solution proposed by the present invention is:

A beach mountain bike is mainly composed of a frame, a steering system, a braking system, a transmission system, a power system, an electric system and wheels. The wheel is divided into a front wheel and a rear wheel, and the frame is entirely seated on the wheel. The steering system, the braking system, the transmission system, the power system, and the electrical system are all placed on the frame; wherein - the steering system is placed at the front of the frame, and the steering wheel for controlling the front wheel is fixed at the front of the frame; a brake disc on the service brake device of the brake system is mounted on the rear wheel or the drive shaft, and a brake pedal for controlling the brake disc is disposed under the front portion of the frame;

It is characterized by:

The beach mountain bike further includes a suspension, the suspension being a two-wheel or four-wheel independent suspension, the independent suspension including a front wheel suspension device and a rear wheel suspension device, the frame passing through the suspension The transmission system is disposed at the rear of the frame; the transmission system includes a driving wheel, a driven wheel, and a transmission square beam, wherein the two transmission square beams are respectively fixed on the inner side of the wheel.

The power system is disposed at a rear portion of the frame, adjacent to the transmission system, the power system includes an engine, the output shaft of the engine is connected to the driving wheel, and the driving wheel is connected to the driven wheel through the transmission belt; or the output shaft of the engine The upper intermediate transmission member is connected to the intermediate transmission member and then connected to the driven pulley through the transmission belt.

A synchronous transmission belt, a rear wheel half shaft and a rear wheel suspension device are respectively mounted on the transmission square beam in the transmission system, and the transmission system further includes a differential, the differential ends respectively and the transmission short shaft and One end of the transmission long shaft is connected, and the other ends of the transmission short shaft and the transmission long shaft are respectively fixed on the frame after passing through the transmission square beam.

The transmission system further includes a reverse gear device, including a reverse handle, a reverse push cable, an input switch shaft, a reverse gear and an output switch shaft, wherein the reverse handle is disposed at the front of the frame, and the reverse gear The reverse gear in the device is disposed at the rear of the frame; the reverse handle is connected to the reverse gear through the reverse push cable, and the input reverse shaft and the output tray shaft are respectively disposed on the two sides of the reverse gear, and the input tray shaft Connecting the driven wheel in the transmission system, and the output sprocket is equipped with a reverse sprocket provided on the transmission system;

The parking system further includes a parking brake device, the parking brake device includes a parking handlebar, a handlebar cable, and a hand brake clamp, wherein the parking handlebar is fixed in front of the frame, and the hand brake clamp is also connected to control the driving. a brake disc on the brake device; The parking system further includes a parking brake device, the parking brake device includes a parking handlebar, a handlebar cable, a handbrake forceps and a hand brake disk, wherein the parking handlebar and the handbrake forceps are fixed on the frame. The hand brake disc is mounted on the output tray shaft provided in the reverse gear device;

The service brake device in the brake system is independent of each other, and two brake pedals are separately controlled by two brake pedals respectively;

The differential in the transmission system is provided with a differential suspension device, which mainly comprises a central sprocket and a plurality of bearings, wherein a central sprocket is mounted on the right end casing of the differential, and a bearing is arranged in the central sprocket. The bearing is mounted on the short shaft of the transmission of the transmission system, and the bearing housing is mounted on the left end housing of the differential, and a bearing is mounted in the bearing housing, and the bearing is mounted on the long shaft of the transmission;

A differential locking device is mounted on one side of the differential suspension device, and mainly includes a tooth nest, a fork, a fork, a steel ball, a compression spring and a set screw, which are in the differential suspension device. The inner sprocket is machined with internal cogs that mesh with the nest of the teeth. The nesting of the teeth can be mounted on the short shaft of the drive along the short axis of the drive, and the fork is mounted on the nest of the teeth. Connected to the fork and fixed to the frame, the steel ball, the compression spring and the set screw are mounted on the tooth nest;

The front wheel suspension device includes a front damper assembly, and the rear wheel suspension device includes a rear damper assembly, the upper end of the front damper assembly is connected to the front of the frame, and the lower end and the front wheel The upper connecting pipe is connected, the upper end of the rear damper assembly is connected with the rear part of the frame, and the lower end is respectively connected with the transmission square beam;

The barrel strokes of the front damper assembly and the rear damper assembly can be adjusted;

The driving wheel and the driven wheel of the transmission system adopt a V-belt inertia CVT structure for implementing a continuously variable transmission;

The front seat of the frame is provided with a driver's seat, and the seat is a front and rear adjustable seat;

The reverse gear is provided with a forward gear, a reverse gear, and a box reverse gear of a single-bar fork control mechanism;

A portable automatic air pump that can automatically charge and deflate the front and rear wheels is mounted behind the frame.

Compared with the prior art, the invention has relatively significant improvement and improvement in safety, passability, novelty and the like - 1. The structure of the invention is safe and reliable, the braking performance is good, and the driver and passenger are effectively protected. Driving safety improves the operational safety of the vehicle.

1. The main frame is made of seamless steel tube and welded, the shape is simple and beautiful, the layout is reasonable, not only It can ensure that the assembly, components and pipelines fixed on the frame do not interfere with each other, and have sufficient strength and impact resistance. The seat is installed in the frame and the seat is equipped with standard-compliant safety. Belt, the vehicle's center of gravity is reduced, the driving is stable, and it is not easy to cause a rollover accident. Even if the vehicle encounters an accidental rollover accident in special circumstances, it can still protect the safety of the driver and passenger;

2. The left and right independent service brakes are used, and each rear wheel can be separately braked. The brake pedal spacing distance is about 35mm, so that the brake operation can be performed simultaneously or separately, and the brake disc is mounted on the rear wheel half. On the shaft, and hidden in the rear wheel rim, avoiding the damage caused by the failure of the brake device caused by the breakage of the timing belt or the collision of the brake disc with a hard object;

3. Set the parking brake device so that the vehicle does not slip after parking.

Second, the invention has good passability, strong off-road performance and climbing ability, and can adapt to various complicated terrains such as beaches, mountain roads, grasslands, mud, ice and snow, and bushes.

1. The differential lock device is set. When the beach mountain bike is driving on a difficult road segment (such as a beach, mud, ice, snow, etc.), the device is used to make the differential not function, so that the ground can be fully utilized. The adhesion coefficient, which makes the traction force reach the maximum possible value, improves the vehicle's passability. When the beach mountain bike is driving a difficult road section and entering a better road section, the device should be released in time to ensure that the vehicle can adapt to various complex terrains and improve the overall performance of the vehicle;

2. The differential suspension device is applied. The differential is directly connected to the drive shaft. It does not need to adopt the traditional rear axle structure, which not only improves the service life of the differential, but also simplifies the structure of the transmission system and reduces the overall The quality of the car;

3, the use of two-wheel / four-wheel independent suspension device, especially the four-wheel independent suspension device, when the vehicle is running, because there is no axle connection between the front wheel, the rear wheel, or the left and right wheels, Each of them moves independently with respect to the frame according to a certain trajectory, and does not affect each other. Therefore, the adhesion of the tire to the ground is greatly improved, and the adaptability to various road surfaces is ensured, and the smooth running of the vehicle on the uneven road or the complicated road surface is ensured. Sexuality and handling stability;

4. It can adjust the ground clearance of the frame chassis according to different terrain conditions, which satisfies the needs of the vehicle to adapt to various complex terrains;

The smear of the tires is increased by the portable air pump to reduce the tire pressure to 0. 4~0. 6MPa, increase the wheel and the ground. The contact area, resulting in greater friction, making the tire less prone to slip and slip, easy to drive, It is beneficial to improve the driving ability of the vehicle. When the beach mountain bike is driving out of the difficult road section and entering a good road section, the portable automatic air pump is used to inflate the tire to the normal air pressure (1. 2~1. 5 Pa). Reduce tire wear.

Third, the invention has novel and unique design, comfortable driving, low noise, and quick and convenient operation.

1. The V-belt inertia CVT structure is adopted to realize the stepless variable speed transmission. The structure is simple and compact, no lubrication is needed, buffering vibration absorption, and low noise;

2, set with a forward gear, a reverse gear, a single-bar fork control mechanism box reverse gear, smart structure, only need to pull the reverse handle when using, pull the reverse push cable, pull the box down The single-pole fork control mechanism on the gear changer can change the direction of the output shaft of the reverse gear, so that the vehicle can be advanced or reversed, and the operation is convenient;

3, the driving space is wide, the driver's seat is set to be adjustable front and rear, can be used for different body shape driving, so that driving comfort;

4. It adopts the rack and pinion direction machine and is placed horizontally. The structure is simple and compact. The steering wheel has strong automatic returning ability, sensitive operation, light weight, reliable operation and long service life.

5. The last stage drive is set to synchronous belt drive, instead of the commonly used chain drive, the transmission efficiency is low, and the noise during operation is small;

6. The transmission square beam is mounted on the frame. The transmission shaft is supported on the transmission square beam through the bearing. The transmission square beam can jump up and down around the transmission shaft according to a certain trajectory, which overcomes the excessive force of the rear side of the transmission square beam. Accelerate the tire wear; the transmission square beam is used to install the drive shaft, the timing belt drive, the rear wheel axle, the brake cylinder, etc., so that the axial relative positions of the left and right drive wheels are fixed, The rear wheel independent suspension device is mounted to withstand the reaction forces and moments transmitted from the wheels and to transmit force between the drive wheels and the suspension.

Compared with the prior art, the invention not only has novel design, unique design, simple and beautiful appearance, excellent performance, safety and reliability, comfortable driving, strong off-road performance and climbing ability, and the ability of the vehicle to adapt to the road surface and smooth running. Sexual and handling stability is significantly improved, and easy to manufacture, easy to install and maintain. DRAWINGS

Figure 1 is a front view of the present invention;

Figure 2 is a plan view of the present invention;

Figure 3 is a right side view of the present invention; Figure 4 is a schematic view of the transmission of the present invention;

Figure 5 is a schematic structural view of the frame of the present invention;

Figure 6 is a schematic structural view of a steering system of the present invention;

Figure 7 is a schematic structural view of a brake system of the present invention;

7A is a schematic view showing the installation of another structure of the brake system of the present invention;

Figure 8 is a schematic structural view of a reverse gear device of the present invention;

Figure 9 is a schematic structural view of a transmission system of the present invention;

Figure 10 is a schematic structural view of a differential suspension device of the present invention;

Figure 11 is a schematic structural view of a differential lock device of the present invention;

Figure 12 is a schematic structural view of a front wheel suspension device of the present invention;

Figure 13 is a schematic structural view of a rear wheel suspension device of the present invention;

Figure 14 is a schematic structural view of a power system of the present invention;

Figure 15 is a schematic structural view of an electrical system of the present invention;

Figure 16 is a schematic view showing the positional structure of the portable automatic air pump of the present invention. detailed description

The invention is described in further detail below with reference to the accompanying drawings.

As shown in FIGS. 1 to 3, the beach mountain bike provided by this embodiment is mainly composed of a frame 10 (including a seat, a seat belt), a steering system 20, a brake system 30, a reverse gear device 40, a transmission system 50, and a suspension. 60, the power system 70, the electrical system 80, the wheel 90 and the like.

As shown in FIG. 4, the transmission principle of the present invention is: after starting the engine 71, the power outputted by the engine is sequentially passed through a continuously variable transmission (CVT including a driving wheel 574, a transmission belt 575 and a driven wheel 576), a reverse gear 45, The reverse sprocket 502, the center sprocket 503, the differential 501, the drive shaft 504, 531, the synchronous transmission belt 508, the rear wheel half shaft 509, and finally transmitted to the two rear wheels 92 (drive wheels) to realize the in-situ vehicle Various sports such as starting, climbing, turning, accelerating, and reverse. - As shown in Fig. 5, the frame 10 of the present invention is the assembly base of the entire beach mountain bike, and is composed of a main frame 11, a seat 12, a seat belt 13 and a frame attachment 14 distributed around the frame. , used to support and connect the vehicle's assembly, so that each assembly maintains a relatively correct position, and withstand the internal and external loads, it is seated on the wheel through the suspension. The main frame 11 is all made of seamless steel pipe, which is simple and beautiful in appearance. Reasonable, not only can the assembly, components and pipelines fixed on the frame not interfere with each other, but also have sufficient strength and impact resistance, even if the vehicle encounters an accidental rollover accident in special circumstances. It still protects the safety of drivers and passengers. The seat 12 is designed to be adjustable front and rear, and can be used by people of different body types to ensure that the driving space is wide. The seat 12 is equipped with a safety belt 13 conforming to the standard, which effectively ensures the driving safety of the driver and passenger. The frame attachment 14 is used to mount the assemblies, components and piping.

As shown in FIG. 6, the steering system 20 of the present invention is used to change the traveling direction of the vehicle, and is composed of a steering wheel 21, a universal joint 22, a steering shaft 23, a left steering tie rod 24, a steering machine 25, a steering fixed code 26, and The right steering tie rod 27 and the like are composed, the steering wheel 21 is fixed to the front part of the frame 10, and the steering machine 25 is fixed on the frame attachment 14 by the steering machine fixing code 26, and the left steering tie rod 24 and the right steering tie rod 27 are outside. The ends are tied with a tie rod ball head and joined to the left and right knuckle arms of the left knuckle 614 and the right knuckle 615 on the front wheel suspension device 61. The steering machine 25 uses a rack and pinion type steering machine and is horizontally placed. The structure is simple and compact, and the steering wheel has strong automatic returning ability, is sensitive, light, reliable, and has a long service life. The driver turns the steering wheel 25 by manipulating the steering wheel 21, at which time the steering rack on the steering wheel 25 moves laterally, causing the left steering tie rod 24 and the right steering tie rod 27 to be pressed, one pulled, and then moved. The outer end of the tie rod drives the left and right knuckle arms and the steering knuckle to rotate around the kingpin through the ball-end hinge, thereby deflecting the steering wheel (front wheel) by an angle. The steering system 20 can not only change the traveling direction of the vehicle, but also drive in the direction in which the driver is fixed, and can also overcome the steering caused by the lateral interference force of the road surface to restore the original traveling direction of the vehicle.

As shown in FIG. 7, the brake system 30 of the present invention is composed of a service brake device 31 and a parking brake device 32. The service brake device 31 is used during running of the vehicle to decelerate or stop the running vehicle. It is composed of the brake master cylinder 311, the brake pedal 312, the brake oil pipe 313 and the brake oil pipe 314, and the brake branch. The pump 315, the brake disc 316 and the like are composed, the brake master cylinder 311, the brake oil pipes 313, 314 are fixed on the frame attachment 14, and the brake cylinder 315 is mounted on the transmission beam 505, 530 of the transmission system 50, and the brake is applied. The disk 316 is mounted on the rear wheel half shaft 509 in the transmission system 50. The brake disc can also be mounted on the drive shaft. As a result of the installation, if the timing belt is broken, the rear wheel can still be driven by inertia, resulting in incomplete braking, but it can be implemented as a simple structure. The brake disc provided by the example is mounted on the rear wheel axle and can be applied as a preferred embodiment. The driving brake device 31 has two sets in total, and each of the rear wheels can be separately braked, and the distance between the two brake pedals is about 35, so as to be simultaneously or separately. Braking operation, and the brake disc is mounted on the rear wheel axle and hidden in the rear wheel rim, avoiding the hazard caused by the failure of the brake device caused by the break of the timing belt or the hard disk collision of the brake disc; The parking brake device 32 is used after the vehicle is parked, so that the vehicle does not slip after parking. It consists of a parking handle 321 , a handle cable 322 , a hand brake caliper 323 and a hand brake disk 324 , and the parking handle 321 , the hand brake caliper The 323 is fixed to the frame attachment 14, and the hand brake disk 324 is mounted on the output pad shaft 46 in the reverse gear unit 40. After parking, the parking handle 321 is pulled up, the handle cable 322 is pulled closer, and the hand brake 323 is pulled to clamp the hand brake disk 324, so that the output plate shaft 46 in the reverse gear device 40 cannot be rotated, and the parking brake can be implemented. When driving, pull the parking handle 321 down to release the parking brake.

FIG. 7A is a schematic view showing the installation of another structure of the brake system of the present invention, which is different from the installation shown in FIG. 7 in that the parking brake device 32 does not have a hand brake disc, but directly the hand brake clamp 323. Connected to the brake disc 316 on the rear wheel 92, the brake disc 316 is directly brake controlled by the hand brake caliper 323 instead of the linkage structure of the output tray shaft 46 in the reverse gear unit 40. Vehicle parking does not slip, the structure is relatively simple, and the operation is very convenient.

As shown in FIG. 8, the reverse gear device 40 of the present invention is used for a beach mountain bike to travel forward or backward. It is composed of a reverse handle 41, a reverse push cable 42, an input plate shaft 43, and a seat. The bearing 44, the reverse gear 45 and the output plate shaft 46 are composed of the reverse handle 41, the seat bearing 44 and the reverse gear 45 fixed to the frame attachment, and the input plate shaft 43 is used for installing the continuously variable transmission ( The driven wheel 576 in the CVT) receives and transmits the power output from the engine. The output plate shaft 46 is used to mount the reverse sprocket 502 and the hand brake disk 324, and transmits the power output from the engine to the center sprocket 503 in the transmission system 50. . The reverse gear 45 is provided with a forward gear, a reverse gear, and a box reverse gear of a single-bar fork control mechanism. The structure is dexterous, and only needs to pull the reverse handle when pulling, pulling the reverse push cable, dialing The single-bar fork control mechanism on the movable box type reverser can change the direction of the output shaft of the reverse gear to advance or reverse the vehicle, which is convenient to operate.

As shown in Fig. 9, the transmission system 50 of the present invention is used to transmit the power output from the engine to the driving wheels, so that the road surface exerts a traction force on the driving wheels to drive the vehicle. It consists of a differential suspension device 51, a differential lock device 52, a differential 501, a reverse sprocket 502, a center sprocket 503, drive shafts 504 and 531, transmission square beams 505 and 530, and a housing bearing 506. , 532, bearing 507, synchronous transmission belt 508 and rear wheel axle 509 and the like. The power outputted by the engine is transmitted to the reverse sprocket 502 via the continuously variable transmission (CVT) and the reverse gear 45, and then transmitted to the center sprocket 503, and then passed through the differential 501 and the transmission short shaft. 504. The transmission long shaft 531, the transmission square beams 505 and 530, and the synchronous transmission belt 508 are transmitted to the rear wheel half shaft 509, and the rear wheel 92 is driven to realize various movements of the vehicle. The transmission short shaft 504 is fixed to the transmission square beam 505 and the center sprocket 503 through bearings 507 and 511, and the transmission long shaft 531 is fixed to the frame attachment 14 and the transmission square beam 530 through the seat bearings 506 and 532. The transmission beam 505, 530 is used for mounting the transmission shaft 504, 531, the same transmission belt 508, the rear wheel half shaft 509, the brake cylinder 315 and the like, so that the axial relative positions of the left and right driving wheels are fixed, and It is used to install the rear wheel independent suspension device 62, which receives the reaction force and torque transmitted from the driving wheel and transmits force between the driving wheel and the suspension. A brake disc 316 is mounted on the rear wheel half shaft 509 in addition to the drive rear wheel 92. The transmission square beam is mounted on the frame, and the transmission shaft is supported on the transmission square beam through the bearing, and the transmission square beam can jump up and down around the transmission shaft according to a certain trajectory, thereby overcoming the backward rotation of the rear wheel due to excessive force of the transmission square beam. To accelerate the phenomenon of tire wear. The last stage of the transmission system is set to synchronous belt drive, rather than the commonly used chain drive, which has high transmission efficiency and low noise during operation.

As shown in Fig. 10, the present invention provides a differential suspension device 51 which is composed of a center sprocket 503, a bearing 511, a bearing housing 512 and a bearing 513. A center sprocket 503 is mounted on the right end housing of the differential 501. The center sprocket 503 is provided with a bearing 511. The bearing 511 is mounted on the transmission short shaft 504, and the left end housing of the differential 501 is mounted with a bearing housing 512. A bearing 513 is mounted in the bearing housing 512, and the bearing 513 is mounted on the transmission long shaft 531. After the differential suspension device 51 is installed at both ends of the differential 501, the differential 501 does not need to be mounted on the rear axle, but is directly connected to the transmission half shaft, and the differential works more smoothly, because the first two The root half shaft is concentric with the differential, and the second half shaft gear is not subjected to the bending moment, which is beneficial to reduce the wear between the side gear and the differential housing, and completely installs the differential on the rear axle. The function of the differential greatly improves the service life of the differential, and simplifies the structure of the transmission system, reduces the quality of the whole vehicle, and is convenient to use and maintain.

As shown in Fig. 11, the present invention provides a differential lock device 52 which is composed of a tooth nest 521, a fork bar 523, a steel ball 524, a compression spring 525, and a set screw 526. In the differential suspension device 51, the differential 501 is mounted with a center sprocket 503 which is machined with internal teeth cogs that mesh with the tooth nest 521, and the tooth nest 521 is mounted on the transmission short shaft 503. The fork 522 is mounted on the tooth nest 521, and the fork 523 is connected to the fork 522 and fixed on the frame attachment 1 to drive the fork 522 and the claw The sleeve 521 is laterally moved, and a steel ball 524, a compression spring 525, and a set screw 526 are mounted on the tooth nest 521. First loosen the set screw 526, then push the fork lever 523 to drive The fork 522 and the tooth nest 521 move laterally to the left. When the tooth nest 521 is engaged with the center sprocket 503, since the center sprocket 503 is mounted on the housing of the differential 501, the differential 501 is The short shaft 504 of the transmission is locked together, and the differential rotates together with the short shaft of the transmission, and the differential does not function as a differential, that is, the differential is locked. At this time, the set screw 526 is tightened, and the compression spring 525 is pressed to embed the steel ball 524 in the groove on the transmission short shaft 504 to prevent the tooth nest 521 from being dislocated from the center sprocket 503 due to vibration during running of the vehicle. . The loosening set screw 526, the pulling fork 523 is driven, the pulling fork 522 and the tooth nesting 521 are moved laterally to the right, so that the tooth nest 521 is separated from the central sprocket 503, and the differential 501 and the transmission short shaft are not Locked together, the differential starts to play a differential role.

When the beach mountain bike is driving on difficult road sections (such as beaches, mud, ice and snow), use the differential lock device to make the differential not work, so that the ground adhesion coefficient can be fully utilized to make the traction force reach The maximum possible value increases the passability of the vehicle. When the beach mountain bike is driving out of a difficult road section and entering a good road section, the device should be released in time to avoid the adverse consequences caused by the absence of the differential. In this way, the vehicle can be adapted to various complex terrains and the overall performance of the vehicle is improved.

As shown in FIG. 12 and FIG. 13, the suspension 60 of the present invention is a four-wheel independent suspension device (which can also be a two-wheel independent suspension device, that is, only the front wheel adopts an independent suspension device, and the rear wheel still uses a conventional shaft. Wheel structure, this embodiment adopts a four-wheel independent suspension device as a preferred embodiment), and its function is to elastically connect the main frame to alleviate the impact force of the vehicle in the traveling vehicle and ensure the comfort of the driver and passenger. Attenuation due to the vibration caused by the elastic element, the reaction force and its torque are transmitted, so that the wheel jumps against the frame according to a certain trajectory to ensure the normal running of the vehicle. It includes a front wheel suspension device 61 and a rear wheel suspension device. As shown in FIG. 12, the front wheel suspension device 61 is composed of a damper assembly 611, a front wheel upper connecting pipe 612, a front wheel lower connecting pipe 613, a left knuckle 614, and a right knuckle 615, etc. The upper end of the vibrator assembly 611 is coupled to the frame attachment 14 and the lower end is coupled to the front wheel upper connecting tube 612. The front wheel 91 is coupled to the left knuckle 614 and the right knuckle 615, respectively, and the knuckle arm and steering of the left knuckle 614. The left steering tie rod 24 on the system, the knuckle arm of the right steering knuckle 615 is coupled to the right steering tie rod 27 on the steering system 20; as shown in Figure 13, the rear wheel suspension device 62 is post-damped The assembly 621 is formed. The upper end of the rear damper assembly 621 is connected to the frame attachment 14 and the lower end is connected to the transmission beam 505, 530, respectively. Whether the front damper assembly 611 or the rear damper assembly 621 can adjust the barrel stroke, the ground clearance of the chassis of the main frame 11 can be adjusted to meet the vehicle's adaptation to various complex terrains. demand. When the vehicle is running, since there is no axle connection between the front wheel and the rear wheel, or between the left and right wheels, the frame can be respectively aligned with a certain trajectory. Independent movement, without affecting each other, greatly improves the adhesion of the tire to the ground, has good adaptability to various road surfaces, and ensures the smoothness and steering stability of the vehicle on uneven roads or complex roads.

As shown in FIG. 14, the power system 70 of the present invention is mainly composed of an engine 71, a fuel tank 72, and a fuel pipe 73. The output shaft of the engine 71 is mounted with a driving wheel 574 in the transmission system 50, and the driving wheel 574 is sequentially connected to the transmission belt 575 ( The sprocket wheel, the driven wheel 576, the throttle cable 577, the damper cable 578 and the accelerator pedal 579 can also be respectively connected, wherein the transmission driving wheel 574 and the driven wheel 576 adopt a V-belt inertia CVT structure, thereby realizing the continuously variable transmission. . The engine 71, the oil tank 72, the throttle cable 577, the damper cable 578 and the accelerator pedal 579 are all fixed on the frame attachment 14, the driving wheel 574 is mounted on the output shaft of the engine 71, and the driven wheel 576 is mounted on the reverse gear unit 40. The input shaft is on the shaft 43. The engine used is powerful and reliable. Thanks to the CVT continuously variable transmission, the driver can control the speed of the vehicle by simply adjusting the size of the throttle. The operation is simple and convenient, and the structure is simple, compact and low noise. The above structure is the power system structure provided by the embodiment, wherein an intermediate transmission member, such as a shifting device, for changing the output rotational speed may be connected to the output shaft of the engine, and the intermediate transmission member is mounted on the output shaft of the engine. After that, the driving wheel is connected, and the driving wheel is connected to the driven wheel through the transmission belt. Thus, after the driving wheel passes through the intermediate transmission member, the rotation speed of the driving wheel can be improved, thereby changing the output speed of the engine.

As shown in FIG. 15, the electrical system 80 of the present invention is composed of a headlight 81, a terminal block 82, a starter 83, a control line 84, a battery 85, a tail light 86, an illumination switch 87, and an oil alarm indicator 88, and the headlights. 81. The terminal block 82, the starter 83, the battery 85, the tail light 86, the light switch 87, and the oil alarm indicator light 88 are all fixed to the frame attachment 14.

As shown in Fig. 16, the present invention is configured with a portable automatic air pump 100 which is composed of a power cord 101, a pump body 102, a barometer 103, a gas pipe and a gas nozzle 104, and the like. In use, the power cord 101 is coupled to the battery 85 in the electrical system 80, and the air tube and nozzle 104 are coupled to the front tire 91 or the rear tire 92. When the beach mountain bike is driving on a difficult road section, the portable automatic air pump 100 can be used to deflate the tire, and the tire pressure is reduced to 0. 4~0. 6MPa, increasing the contact area between the wheel and the ground, thereby generating a larger The frictional force makes the tire not easy to idling and slippery, easy to drive, and is conducive to improving the driving ability of the vehicle. When the beach mountain bike is driving out of the difficult road section and entering a good road section, the portable automatic air pump 100 is used to inflate the tire in time. To normal air pressure (1. 2~1. 5MPa) to reduce tire wear. π The above specific embodiments and the accompanying drawings illustrate the features and advantages of the present invention, and the detailed description is not intended to limit the scope of the present invention, and the scope of the present invention should be determined by the claims.

Claims

Rights request

1. A beach mountain bike, mainly consisting of a frame (10), a steering system (20), a braking system (30), a transmission system (50), a power system (70), an electrical system (80), and wheels (90). Composition, the wheel (90) is divided into a front wheel (91) and a rear wheel (92). The frame (10) is entirely seated on the wheel (90), the steering system (20), the braking system (30) ), the transmission system (50), the power system (70), and the electrical system (80) are all placed on the frame (10);

The steering system (20) is placed at the front of the frame (10), and the steering wheel (21) for controlling the front wheel (91) is fixed to the front of the frame;

Brake system (30) The brake disc (316) on the service brake (31) is mounted on the rear wheel (92) or the drive shaft, and the brake pedal (312) that controls the brake disc (316) Set under the front of the frame (10);

The utility model is characterized in that - the beach mountain bike further comprises a suspension (60), the suspension (60) being a two-wheel or four-wheel independent suspension, the independent suspension comprising a front wheel suspension device (61) and a rear a wheel suspension device (62), wherein the frame (10) is integrally seated on the wheel (90) by a suspension (60);

The transmission system (50) is disposed at a rear portion of the frame (10), and includes a driving wheel (574), a driven wheel (576>, a transmission square beam (505, 530), wherein two transmission square beams (505, 530) fixed to the inside of the wheel (92);

The power system (70) is disposed at the rear of the frame (10) adjacent to the transmission system (50), and the power system (70) includes an engine (71), and the output shaft of the engine (71) is actively connected The wheel (574), the driving wheel (574) is connected to the driven wheel (576) through a transmission belt; or the intermediate transmission member is connected to the output shaft of the engine (71), and the driving wheel (574) is connected to the intermediate transmission member and then passed The drive belt is connected to the driven wheel (576).

2. The beach mountain bike according to claim 1, characterized in that: the transmission belt beam (505) and the transmission square beam (530) in the transmission system (50) are respectively mounted with a synchronous transmission belt (508), and then The wheel half shaft (509), the rear wheel suspension device (62), and the transmission system (50) further include a differential (501), and the differential (501) has two ends and a transmission short shaft (504) It is connected to the long shaft of the transmission (531), and the other ends of the transmission short shaft (504) and the transmission long shaft (531) pass through the transmission beam (505), (530) respectively. It is fixed to the frame (10).

3. A beach mountain bike according to claim 1 or 2, characterized in that: said transmission system

(50) further comprising a reverse gear device (40), the reverse gear device (40) comprising a reverse handle (41), a reverse push cable (42), an input plate shaft (43), a reverse gear ( 45) and an output tray shaft (46), wherein the reverse handle (41) is disposed at the front of the frame (10), and the reverse gear (45) is disposed at the rear of the frame (10); The handle (41) is connected to the reverse gear (45) through the reverse push cable (42), and the input reverse shaft (43) and the output switch shaft (46) are respectively arranged on both sides of the reverse gear (45), the input tray The shaft (43) is connected to the driven wheel (576) in the transmission system (50), and the output sprocket (46) is equipped with a reverse sprocket (502) provided on the transmission system (50).

4. A beach mountain bike according to claim 1, characterized in that: the brake system (30) is further provided with a parking brake device (32), the parking brake device (32) comprising a parking lot The (321), the handlebar (322), the hand brake (323), wherein the parking handle (321) is fixed in front of the frame (10), and the hand brake (323) is also connected to the control brake device (31) Upper brake disc (316).

5. A beach mountain bike according to claim 3, characterized in that: the brake system (30) is further provided with a parking brake device (32), the parking brake device (32) comprising a parking lot (321), handlebar cable (322), hand brake caliper (323) and hand brake disc (324), wherein the parking handlebar (321), the hand brake caliper (323) are fixed on the frame (10), the hand brake disc ( 324) Mounted on the output tray shaft (46) provided in the reverse unit (40).

6. A beach mountain bike according to claim 1 or 4 or 5, characterized in that: the service brake device (31) in the brake system (30) is independent of each other, and is composed of two brake pedals (312). ) separately control the two brake discs (316) mounted on the rear wheel (92).

7. A beach mountain bike according to claim 2, characterized in that: the differential (501) in the transmission system (50) is provided with a differential suspension device (51), which mainly comprises a central sprocket (503) and a plurality of bearings, wherein a center sprocket (503) is mounted on the right end casing of the differential (501), and a bearing (511) is mounted in the center sprocket (503), and the bearing (511) is mounted on the transmission On the transmission short shaft (504) of the system (50), a bearing housing (512) is mounted on the left end housing of the differential (501), and a bearing (513) is mounted in the bearing housing (512), and the bearing (513) is mounted on Drive the long shaft (531).

8. A beach mountain bike according to claim 7, wherein: said differential suspension device

(51) a differential locking device (52) is mounted on one side, which mainly includes a tooth nest (521), a fork (522), a fork (523), a steel ball (524), a compression spring (525), and a set screw (526) that is machined with the jaw on the center sprocket (503) of the differential suspension (51) The sleeve (521) engages the internal cogs, the nest (521) can be mounted laterally on the drive stub (504) along the drive stub (504), and the fork (522) is mounted on the jaws On the sleeve (521), the fork rod (523) is connected to the fork (522) and fixed to the frame (10), and the steel nest (524) and the compression spring (525) are mounted on the tooth nest (521). And set screws (526).

The beach mountain bike according to claim 1, wherein said front wheel suspension device (61) includes a front damper assembly (611), and the rear wheel suspension device (62) contains a rear a damper assembly (621), an upper end of the front damper assembly (611) is connected to a front portion of the frame (10), and a lower end is connected to a front connecting tube (612), the rear damper is always The upper end (621) is connected to the rear of the frame (10), and the lower end is connected to the transmission square beam (505) and the transmission square beam (530), respectively.

10. The beach mountain bike according to claim 9, wherein: the front damper assembly (611) and the rear damper assembly (621) have a member for adjusting the stroke thereof.

The beach mountain bike according to claim 1 or 2, characterized in that: the driving wheel (574) and the driven wheel (576) of the transmission system (50) adopt a V-belt inertia type CVT that realizes a continuously variable transmission. structure.

12. A beach mountain bike according to claim 1 or 4 or 5, characterized in that the front seat of the frame (10) is provided with a driver's seat (12), the seat (12) being front and rear Adjustable seat.

13. A beach mountain bike according to claim 3, wherein: said reverse gear (45) is provided with a forward gear, a reverse gear, and a box reverse gear of a single lever fork operating mechanism.

The beach mountain bike according to claim 12, characterized in that: the frame (10) is provided with a portable automatic air pump (100) for automatically charging and deflation of the front and rear wheels.